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Journal articles on the topic 'Shell sculpture'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Lezin, Peter, and Lyudmila Flyachinskaya. "Shell sculpture formation in bivalves of the genus Hiatella under different temperature conditions." Journal of the Marine Biological Association of the United Kingdom 95, no. 8 (2015): 1621–27. http://dx.doi.org/10.1017/s0025315415000259.

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This study examines the effect of water temperature on the formation of shell sculpture in young molluscs of the genus Hiatella. The larvae of H. arctica and H. gallicana were maintained under laboratory conditions at different temperature regimes. The animals were reared from late veligers to juveniles with a shell length of 700 μm. The results of the experiment showed that the shell sculpture, which is a diagnostic species character, was developed to various degrees at different temperatures. The larvae of each species grew to juveniles with variously pronounced shell sculptures ranging from

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2

Kohn, Alan J. "Slip-resistant silver-feet: shell form and mode of life in lower Pleistocene Argyropeza from Fiji." Journal of Paleontology 60, no. 5 (1986): 1066–74. http://dx.doi.org/10.1017/s0022336000022599.

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Asymmetric sculpture in the form of tubercles or ridges on the shells of large (mean shell length ~60 mm) turritelliform gastropods has previously been shown to enhance efficiency of the shell as a penetration anchor in burrowing through coarse sediment. The small (<8 mm) turritelliform shells of all species of Argyropeza (Family Cerithiidae) have both of these ratchetlike sculptural features. Four lines of evidence from Lower Pleistocene A. divina and A. schepmaniana from Fiji support the interpretation that they help resist back-slippage: cross-orientation, frictional asymmetry, allometri

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3

Crampton, James S. "Shell composition, cryptic costae, complex composite molds, and taphonomic chicanery in Mytiloides (Inoceramidae, Bivalvia)." Journal of Paleontology 78, no. 6 (2004): 1091–96. http://dx.doi.org/10.1017/s0022336000043900.

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Many bivalves and brachiopods possess multilayered shells. In one such bivalve, Mytiloides ipuanus (Wellman, 1959) (Inoceramidae), the mineralized shell comprises an outer prismatic calcite layer and an inner nacreous aragonite layer. Each of the three shell surfaces—the external, internal, and shell layers' interface—has a distinct sculpture. Pronounced costae on the shell interface are “cryptic” in the sense that, in life, they would have been barely expressed on the internal surface and only expressed as comparatively weak, broad, rounded costae on the external surface. In fossil specimens,

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4

Khalik, Mohd Zacaery, Kasper P. Hendriks, Jaap J. Vermeulen, and Menno Schilthuizen. "Conchological and molecular analysis of the “non-scaly” Bornean Georissa with descriptions of three new species (Gastropoda, Neritimorpha, Hydrocenidae)." ZooKeys 840 (April 17, 2019): 35–86. http://dx.doi.org/10.3897/zookeys.840.33326.

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The Bornean representatives of the genus Georissa (Hydrocenidae) have small, dextral, conical, calcareous shells consisting of ca. three teleoconch whorls. Our recent study on the Georissa of Malaysian Borneo has revealed high intra- and inter-specific variation in the “scaly” group (a group of species with striking scale-like surface sculpture). The present study on the “non-scaly” Georissa is the continuation of the species revision for the genus. The “non-scaly” species are also diverse in shell sculptures. This informal group comprises Georissa with subtle spiral and/or radial sculpture. T

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Khalik, Mohd Zacaery, Kasper P. Hendriks, Jaap J. Vermeulen, and Menno Schilthuizen. "Conchological and molecular analysis of the "non-scaly" Bornean Georissa with descriptions of three new species (Gastropoda, Neritimorpha, Hydrocenidae)." ZooKeys 840 (April 17, 2019): 35–86. https://doi.org/10.3897/zookeys.840.33326.

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The Bornean representatives of the genus Georissa (Hydrocenidae) have small, dextral, conical, calcareous shells consisting of ca. three teleoconch whorls. Our recent study on the Georissa of Malaysian Borneo has revealed high intra- and inter-specific variation in the "scaly" group (a group of species with striking scale-like surface sculpture). The present study on the "non-scaly" Georissa is the continuation of the species revision for the genus. The "non-scaly" species are also diverse in shell sculptures. This informal group comprises Georissa with subtle spiral and/or radial sculpture. T

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López, Adolfo, Janina Urcuyo, and Gabriel Vega. "Extension of the genus Pseudopeas (Dysopeas) (Gastropoda: Subulinidae) from Venezuela to Nicaragua." UNED Research Journal 7, no. 2 (2015): 333–39. http://dx.doi.org/10.22458/urj.v7i2.1162.

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The study of Nicaraguan land snails is fragmentary. Recent sampling produced specimens of an undetermined species of Pseudopeas Putzeys, 1899. This genus was segregated from Opeas Albers, 1850 by reason of its prominent rib sculpture and later re-de- scribed by Pilsbry (1906) for the characteristic spiral sculpture of its nepi- onic whorls. Baker (1927) named a new subgenus Dysopeas for species where the spiral sculpture covers the entire shell, not only the nepionic whorls. The Nicaragua specimens show nepionic and body sculptures that precisely match descriptions and illustrations given by P

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7

Stelbrink, Björn, Romy Richter, Frank Köhler, et al. "Global Diversification Dynamics Since the Jurassic: Low Dispersal and Habitat-Dependent Evolution Explain Hotspots of Diversity and Shell Disparity in River Snails (Viviparidae)." Systematic Biology 69, no. 5 (2020): 944–61. http://dx.doi.org/10.1093/sysbio/syaa011.

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Abstract The Viviparidae, commonly known as River Snails, is a dominant group of freshwater snails with a nearly worldwide distribution that reaches its highest taxonomic and morphological diversity in Southeast Asia. The rich fossil record is indicative of a probable Middle Jurassic origin on the Laurasian supercontinent where the group started to diversify during the Cretaceous. However, it remains uncertain when and how the biodiversity hotspot in Southeast Asia was formed. Here, we used a comprehensive genetic data set containing both mitochondrial and nuclear markers and comprising specie

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ABSALÃO, RICARDO SILVA, FRANKLIN NOEL DOS SANTOS, and DEUSINETE DE OLIVEIRA TENÓRIO. "Five new species of Turbonilla Risso, 1826 (Gastropoda, Heterobranchia, Pyramidellidae) found off the northeast coast of Brazil (02º-13º S)." Zootaxa 235, no. 1 (2003): 1. http://dx.doi.org/10.11646/zootaxa.235.1.1.

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Five new species of Turbonilla are described from the Brazilian northern continental shelf. Turbonilla virgulinoi n. sp. from off Pernambuco State (690 m depth) is diagnosed by its semi-pyriform profile and sinuous axial ribs. Turbonilla megascymna n. sp. from off Paraíba State (750 m depth) is characterized by its fragile shell and relatively large planispiral protoconch. Turbonilla kamayura n. sp. from off Paraíba State (750 m depth) is diagnosed by its slightly conical shell with convex whorls without spiral sculpture and the helicoidal protoconch. Turbonilla mermeroglaphyra n. sp. from off

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9

Chang, Zi-Yuan, and Thor-Seng Liew. "A molecular phylogeny of Geotrochus and Trochomorpha species (Gastropoda: Trochomorphidae) in Sabah, Malaysia reveals convergent evolution of shell morphology driven by environmental influences." PeerJ 9 (February 2, 2021): e10526. http://dx.doi.org/10.7717/peerj.10526.

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There are currently eleven Geotrochus and four Trochomorpha species in Sabah. The primary diagnostic character that separates the two genera is the intensity of sculpture on the shell upper surface. All Trochomorpha species have a coarse nodular sculpture while Geotrochus species has a non-nodular sculpture or smooth shell. However, it is known that shell characters are often evolutionary labile with high plasticity in response to environmental factors. Hence, identifying the phylogenetic and ecological determinants for the shell characters will shed light on the shell-based taxonomy. This stu

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Cavallari, Daniel Caracanhas, and Luiz Ricardo Lopes de Simone. "A new species of Arene (Vetigastropoda, Areneidae) from Canopus Bank, off NE Brazil." Papéis Avulsos de Zoologia 58 (April 19, 2018): 23. http://dx.doi.org/10.11606/1807-0205/2018.58.23.

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Arene lychee sp. nov. is described from Canopus Bank, a seamount located ~190 km off Fortaleza, Ceará, NE Brazil (02°14’25”S, 38°22’50”W), based on shell morphology. The species is characterized by a large, trochiform shell; color ranging from intense reddish to white (darker on spiral cords, lighter at base) with a yellow apex; sculpture of 3‑8 wide spiral cords with large scale-like spines; cords separated by deep interspaces with similar width, and interspaces sculptured by closely-packed, thin axial growth lines.

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11

Lee, Wei-Hao, Yi-Fong Wu, Yung-Chin Ding, and Ta-Wui Cheng. "Fabrication of Ceramic Moulds Using Recycled Shell Powder and Sand with Geopolymer Technology in Investment Casting." Applied Sciences 10, no. 13 (2020): 4577. http://dx.doi.org/10.3390/app10134577.

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Lost-wax casting, also called precision casting, is the process of casting a duplicate metal sculpture cast an original sculpture. The ceramic shell mould used in lost-wax casting usually consists of several layers formed with fine zircon and granular mullite particles using silica gel as a binder. However, it is a complicated and time-consuming process. Large amounts of waste moulds that need to be disposed and recycled become an environmental concern. In this study, waste shell sand from the recycled mould and calcium carbonate/metakaolin were used as raw materials to prepare geopolymer slur

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12

Parsons, Jeff. "A new species of Papuina von Martens, 1860 from Nabire, Papua, Indonesia." Festivus 51, no. 4 (2019): 314–19. http://dx.doi.org/10.54173/f514314.

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T This paper describes a new species of Papuina von Martens, 1860 from forest near the Nabire River, SE Cenderawasih (Geelvnik) Bay in Papua Province, Indonesia. Shell periphery, pattern, sculpture, apertural features and coloration separate it from relatives with shells of similar size and shape.

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Knotek, V., J. Červinka, and Z. Křenková. "Survey and restoration of outdoor glass reinforced polyester sculptures." Koroze a ochrana materialu 63, no. 3 (2019): 130–37. http://dx.doi.org/10.2478/kom-2019-0017.

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Abstract The beginning of the use of polyester resins for artistic work date back to the late 1950s. Initially, resins were supposed to temporarily replace and imitate traditional but more expensive sculptural materials (stone, bronze). Later, original, especially fiberglass works were created, where the laminate formed a shell connected to the internal supporting steel structure. Until now, only part of the exterior works of art made of polyester resins have been survived. Although polyester resins are considered to have good weather resistance, most exterior sculptures exhibit more or less s

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14

Oliver, Joan Daniel, and José Templado. "Dos nuevas especies del género Alvania (Caenogastropoda: Rissoidae) de las islas Baleares." Iberus 27(1) (June 30, 2009): 57–66. https://doi.org/10.5281/zenodo.4543952.

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Two new species of the genus <em>Alvania </em>from the Balearic Sea are described based on shell characters. The shell of one of them, <em>A. balearica </em>spec. nov., resembles that of <em>A. subcrenulata </em>and <em>A. nestaresi</em>, but it differs in the more turriculate outline and in some characters of the sculpture of the protoconch and teleoconch. The second one, <em>A. josefoi </em>spec. nov., is compared to the closely related <em>Alvania scabra </em>and <em>A. sculptilis</em>. It differs in being smaller, in the colour pattern of the shell and in some characters of the sculpture o

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15

Isnaningsih, Nur Rohmatin, Adi Basukiriadi, and Ristiyanti Marsetiyowati Marwoto. "THE MORPHOLOGY AND ONTOGENETIC OF TAREBIA GRANIFERA (LAMARCK, 1822) FROM INDONESIA (GASTROPODA: CERITHIOIDEA: THIARIDAE)." TREUBIA 44 (January 11, 2018): 1. http://dx.doi.org/10.14203/treubia.v44i0.2914.

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The freshwater gastropod Tarebia H. Adams & A. Adams, 1854, are found in rivers, lakes, and other limnetic habitats. In Indonesia, Tarebia granifera (Lamarck, 1822) is the only species within the genus that has a wide distribution. The systematics and identity of this species are still doubtful due to high variation in shell morphology, especially shell height and ornamentation or sculpture of shell. To determine the identity of T. granifera from Lombok, Banten, and Maros, ontogenetic studies have been conducted. The results showed that T. granifera from Lombok produce the highest number o

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Parsons, Jeff, and John Abbas. "A new subspecies of Amphidromus palaceus (Mousson, 1849) from Sukabumi Regency, West Java, Indonesia." Festivus 54, no. 4 (2022): 316–25. http://dx.doi.org/10.54173/f544316.

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This paper describes a new subspecies of Amphidromus palaceus (Mousson 1849b) from Nyalindung, West Java, Indonesia. Both subspecies have a similar animal coloration andproduce dextral or sinistral shells. The shell of the new subspecies differs from nominotypical A. palaceus by having pale-colored stripes marking resting stages, lack of brown subsutural spots or blotches and the presence of a smoother sculpture, less recurved lip margin and thicker white parietal callus.

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17

ZHANG, SHUQIAN, SUPING ZHANG, and HAO CHEN. "Enigmaticolus inflatus sp. nov., a new buccinid species from a methane seep area in the South China Sea (Gastropoda: Neogastropoda)." Zootaxa 4728, no. 3 (2020): 385–89. http://dx.doi.org/10.11646/zootaxa.4728.3.8.

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During an investigation carried out by the Institute of Oceanology, Chinese Academy of Sciences (IOCAS), two living buccinid specimens were collected from a deep-sea methane seep area in the South China Sea. Observations of the shell, gross anatomy and radular morphology reveal that they represent an undescribed species of the genus Enigmaticolus. In this paper, we describe and illustrate this species as Enigmaticolus inflatus sp. nov. The new species is by general shell shape most similar to Enigmaticolus marshalli Fraussen & Stahlschmidt, 2016 from Kermadec Ridge, New Zealand, but can be

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NOLT, JAYA M. "A new species of Scissurella from the Azores with discussions on Sinezona semicostata Burnay & Rolan, 1990 and Sinezona cingulata (O.G. Costa, 1861) (Gastropoda: Vetigastropoda: Scissurellidae)." Zootaxa 1678, no. 1 (2008): 51. http://dx.doi.org/10.11646/zootaxa.1678.1.3.

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A new species of Scissurella d’Orbigny, 1824 from the Azores is described and compared to similar species from the eastern Atlantic and Mediterranean areas: Sinezona cingulata (O.G. Costa, 1861), Scissurella costata d’Orbigny, 1824, Sin. semicostata Burnay & Rolán, 1990, Sci. lobini (Burnay & Rolán, 1990) as well as two representatives from the Caribbean, Sin. confusa Rolán & Luque, 1994 and Sci. redferni (Rolán, 1996). The description and comparisons are based on shell and radula morphology examined by scanning electron microscopy. The species that are considered here are describe

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Torjman, Brooke Z., and Erika V. Iyengar. "Hefting Heavy Shells: Sustenance Demands Caused by Various Abodes of the Hermit Crab Pagurus granosimanus." Hydrobiology 3, no. 2 (2024): 74–84. http://dx.doi.org/10.3390/hydrobiology3020006.

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Marine hermit crabs inhabiting different species of shells in the rocky intertidal may receive varied benefits and costs. Thick shell walls, sculpture, and certain silhouettes may increase protection against crushing predators and waves, but also the energy cost for bearing such a shell. To determine the relative energy demands on Pagurus granosimanus supporting one of three different species of shells commonly inhabited in nature, we measured the consumption of food by free-roaming, size-matched individuals after four days of food deprivation in the laboratory. Surprisingly, while all hermit

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Semenikhina, Olga Ya, Natalya K. Kolotukhina, and George A. Evseev. "Morphology of larvae of the family Mytilidae (Bivalvia) from the north-western part of the Sea of Japan." Journal of the Marine Biological Association of the United Kingdom 88, no. 2 (2008): 331–39. http://dx.doi.org/10.1017/s0025315408000659.

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The larval shell morphology of 10 bivalve species of the family Mytilidae (Adula falcatoides, Crenella decussata, Crenomytilus grayanus, Modiolus kurilensis, Musculista senhousia, Mytilus coruscus, Mytilus galloprovincialis, Mytilus trossulus and Septifer keenae, and an unidentified species Mytilidae indeterminate) from the Sea of Japan is described. The following morphological features were comparatively examined: larval shell outlines including shape and size of umbones, and anterior, posterior and ventral margins, hinge morphology, ligament location, sculpture, colour, and eye-spot outlines

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Chaban, E. M., and I. O. Nekhaev. "Age variability in the shell of Scaphander punctostriatus (Mighels et C.B. Adams, 1842) (Gastropoda: Heterobranchia: Cephalaspidea) as revealed by specimens from the Russian part of the Barents Sea." Zoosystematica Rossica 22, no. 2 (2013): 165–71. http://dx.doi.org/10.31610/zsr/2013.22.2.165.

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The shell sculpture and morphology of the radula and gizzard plates of juvenile specimens of Scaphander punctostriatus from the Russian part of the Barents Sea is described for the first time and compared with those of adult specimens; the shell morphology is discussed and illustrated for the first time.

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22

Li, Chunmei, Gang Chen, Jingxue Sun, et al. "A thin empty-shell bismuth tungstate hierarchical structure constructed by the acid sculpture effect with improved visible-light photocatalytic activity." New Journal of Chemistry 39, no. 6 (2015): 4384–90. http://dx.doi.org/10.1039/c4nj01940g.

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23

Germann, Daniel P., Wolfgang Schatz, and Hotz Peter Eggenberger. "Artificially evolved functional shell morphology of burrowing bivalves." Palaeontologia Electronica, Artikelnummer 17. 1.8A (January 1, 2014): 1–25. https://doi.org/10.5281/zenodo.1284211.

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The morphological evolution of bivalves is documented by a rich fossil record. It is believed that the shell shape and surface sculpture play an important role for the burrowing performance of endobenthic species. While detailed morphometric studies of bivalve shells have been done, there are almost no studies experimentally testing their dynamic properties. To investigate the functional morphology of the bivalve shell, we employed a synthetic methodology and built an experimental setup to simulate the burrowing process. Using an evolutionary algorithm and a printer that prints three dimension

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24

Webster, Nicole B., and A. Richard Palmer. "Shaving a Shell: Effect of Manipulated Sculpture and Feeding on Shell Growth and Sculpture Development in Nucella lamellosa (Muricidae: Ocenebrinae)." Biological Bulletin 230, no. 1 (2016): 1–14. http://dx.doi.org/10.1086/bblv230n1p1.

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25

Leonov, Sergei V. "On the reliability of the Balea perversa (Gastropoda: Pulmonata) findings in the Crimea." Ruthenica, Russian Malacological Journal 33, no. 3 (2023): 115–20. http://dx.doi.org/10.35885/ruthenica.2023.33(3).3.

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This study examines and provides illustrations of the diagnostic shell characteristics of juvenile and adult of Crimean clausiliids Balea perversa. The study demonstrates that the distinctive sculpture and shape of the shells make it possible to accurately differentiate Balea perversa. Additionally, the study includes information on previous references in the literature and recent findings of Balea perversa in the Crimea region, including a discovery on the Southern Demerdzhi Yayla in 2002. The study confirms the reliability of at least the last finding.

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Petuch, Edward, and David Berschauer. "A New Athleta Volute from Namibia, Southwestern Africa." Festivus 49, no. 2 (2017): 136–39. http://dx.doi.org/10.54173/f492136.

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A new subspecies of the widespread South African volute, Athleta abyssicola (Adams and Reeve, 1848), is described from deep water off the Namib Desert coast of Namibia. The new subspecies, Athleta abyssicola massieri, differs from the nominate subspecies in being a stockier, squatter shell with a lower spire, in having a much coarser shell sculpture, and in having proportionally larger columellar plications.

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Simone, Luiz Ricardo L. "Stapafurdius, a new genus of Bulimulidae (Mollusca, Eupulmonata) from Bahia, Brazil, with two new species." Papéis Avulsos de Zoologia 61 (October 27, 2021): e20216192. http://dx.doi.org/10.11606/1807-0205/2021.61.92.

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The new genus Stapafurdius gen. nov. is introduced collected from Bahia, Brazil, including two new species: S. glaber sp. nov., the type species, occurs in Ibicoara; and S. costiferus sp. nov., from Andaraí regions. The new genus includes species of about 10 mm, elongated shell, reticulated protoconch, elongated peristome, and wide umbilicus. Both species differ mainly by the sculpture, as S. glaber sp. nov. is smooth, while S. costiferus sp. nov. has strong axial sculpture. urn:lsid:zoobank.org:pub:C851695E-6BF1-4418-8D8A-8BC7D10CC2FE.

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Whisson, Corey S., and Abraham S.H. Breure. "A new species of Bothriembryon (Mollusca, Gastropoda, Bothriembryontidae) from south-eastern Western Australia." ZooKeys 581 (April 14, 2016): 127–40. https://doi.org/10.3897/zookeys.581.8044.

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Bothriembryon sophiarum sp. n. is described, based on shell and anatomical morphology, from the coastal area of south-easternmost Western Australia. This is the first description of a new extant Australian bothriembryontid in 33 years. The shell of B. sophiarum is slender with a unique teleoconch sculpture. It is found in low coastal scrub on cliff edges and escarpments and because of its restricted distribution, qualifies as a short range endemic.

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Rubio, Federico, Luis Dantart, and Ángel A. Luque. "El género Dikoleps (Gastropoda, Skeneidae) en las costas ibéricas." Iberus 22(1) (June 30, 2004): 115–32. https://doi.org/10.5281/zenodo.4516376.

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New data on the shell, radula and external morphology of the soft parts of the species of the genus <em>Dikoleps </em>Høisaeter, 1968 (Gastropoda, Skeneidae) from the Iberian coasts are described and compared, and one new species is described. Within the Iberian species of <em>Dikoleps </em>there are two different groups according to shell sculpture, penis morphology and radular pattern. A key of the species is given.

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Egorov, R. "A new subspecies of <i>Ruthenica filograna</i>(Pulmonata: Clausiliidae) from Croatia." Ruthenica, Russian Malacological Journal 32, no. 1 (2022): 49–52. http://dx.doi.org/10.35885/ruthenica.2022.32(1).5.

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A new subspecies of land snails of the clausiliid genus Ruthenica has been found on the territory of Republic of Croatia. Illustrated description is presented. New subspecies differs from others in shell shape, semi-apostrophic aperture and sculpture pattern.

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Simone, Luiz Ricardo L. "Taxonomical study on a sample of pulmonates from Santa Maria da Vitória, Bahia, Brazil, with description of a new genus and four new species (Mollusca: Orthalicidae and Megalobulimidae)." Papéis Avulsos de Zoologia 52, no. 36 (2012): 431–39. http://dx.doi.org/10.1590/s0031-10492012021600001.

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A sample of Pulmonata collected in Santa Maria da Vitória, interior of Bahia, Brazil, in Caatinga semi-arid environment, is studied taxonomically. From the five species, four are revealed as new, including a new genus. The new taxa are the Bulimulidae (1) Kora corallina gen. et sp. n. characterized by the elongated shell with aperture somewhat dislocated from the shell axis, and an oblique tooth in middle level of inner lip; (2) Spixia coltrorum, mainly characterized by an uneven spire, delicate sculpture and peristome with 4 equidistant teeth; (3) Anostoma tessa, mainly characterized by a bro

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Chaban, E. M., and I. O. Nekhaev. "Retusa pellucida (Brown, 1827) (Gastropoda: Opisthobranchia: Cephalaspidea) from the Barents Sea - a new species for the fauna of Russian Arctic seas." Zoosystematica Rossica 19, no. 2 (2010): 196–204. http://dx.doi.org/10.31610/zsr/2010.19.2.196.

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Retusa pellucida (Brown, 1827) recorded the first time for the recent fauna of the Russian Arctic. New data on morphology of its soft part are given. Shell sculpture of Retusa pellucida is discussed in comparison with R. truncatula (Bruguière, 1792) and related forms.

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Joyce, Walter G., and Tyler R. Lyson. "The shell morphology of the latest Cretaceous (Maastrichtian) trionychid turtle Helopanoplia distincta." PeerJ 5 (December 14, 2017): e4169. http://dx.doi.org/10.7717/peerj.4169.

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Background Helopanoplia distincta is an extinct soft-shelled turtle (Pan-Trionychidae) for which the type specimen is a fragmentary costal and the inguinal notch portion of the left hypoplastron from the Late Cretaceous (Maastrichtian) Lance Formation of Wyoming, USA that bear a distinct surface sculpture pattern consisting of raised tubercles. Over the course of the past few decades, a number of additional, fragmentary specimens from the Late Cretaceous (Maastrichtian) Hell Creek Formation of Montana and North Dakota have been referred to this taxon based on the presence of these tubercles, b

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Parsons, Jeff. "A new subspecies of Asperitas bimaensis (Mousson, 1849) from western Sumbawa, West Nusa Tenggara, Indonesia." Festivus 51, no. 4 (2019): 306–13. http://dx.doi.org/10.54173/f514306.

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This paper describes a new subspecies of Asperitas bimaensis (Mousson, 1849) from Alas District, western Sumbawa in West Nusa Tenggara, Indonesia. Shell coloration, pattern, sculpture, shape and periostracum separate it from the other subspsecies of A. bimaensis, and a similar looking relative from western Sumbawa.

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PIZÁ, JULIA, and NÉSTOR J. CAZZANIGA. "Redescription, shell variability and geographic distribution of Plagiodontes dentatus (Wood, 1828) (Gastropoda: Orthalicidae: Odontostominae) from Uruguay and Argentina." Zootaxa 154, no. 1 (2003): 1. http://dx.doi.org/10.11646/zootaxa.154.1.1.

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Plagiodontes dentatus (Wood, 1828) is the type species of a South American genus including eight named species that show a high degree of local endemism. Due to some misidentifications with P. multiplicatus (Doering, 1874) and P. daedaleus (Deshayes, 1851), P. dentatus has been cited as inhabiting two disjunct areas with quite different ecological conditions. In this paper the identity of this morphospecies is clarified through a study of shell sculpture and apertural teeth data, and a comparison with the smaller adult specimens (<25 mm long) of its closest species, P. patagonicus (d’Orbign

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Páll-Gergely, Barna, Adrienne Jochum, Jaap J. Vermeulen, et al. "The world’s tiniest land snails from Laos and Vietnam (Gastropoda, Pulmonata, Hypselostomatidae)." Contributions to Zoology 91, no. 1 (2022): 62–78. http://dx.doi.org/10.1163/18759866-bja10025.

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Abstract Two new, extremely small land snail species, Angustopila coprologos Páll-Gergely, Jochum & Hunyadi n. sp. and Angustopila psammion Páll-Gergely, Vermeulen & Anker n. sp. are described from northern Vietnam and northern Laos, respectively. The former is characterized by a rough surface sculpture and bears tiny mud granules arranged in a pattern of radial lines on its shell surface. The latter species is the new global record-holder of the tiniest land snail title, with a shell width of 0.6–0.68 mm and a shell height of 0.46–0.57 mm. These measurements surpass the former records

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LEAL, JOSÉ H., and M. G. HARASEWYCH. "Tractolira delli, a new Volutidae (Mollusca: Gastropoda: Neogastropoda) from the abyssal plains off Antarctica." Zootaxa 1071, no. 1 (2005): 39. http://dx.doi.org/10.11646/zootaxa.1071.1.3.

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A new deep-sea species of Volutidae in the genus Tractolira is named from material collected by the United States Antarctic Program in and around the Ross Sea, eastern Antarctica, and from one locality in the Subantarctic region. Tractolira delli new species is most similar to T. sparta Dall, 1896, from which it differs in having a relatively wider shell, less prominent spiral sculpture, with narrower threads, and by the absence of strong axial ribs at least on the first three teleoconch whorls. The other Antarctic congener, Tractolira germonae, has a thicker, dark-brown periostracum (instead

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Allmon, Warren D. "Patterns and processes of heterochrony in lower Tertiary turritelline gastropods, U.S. Gulf and Atlantic Coastal Plains." Journal of Paleontology 68, no. 1 (1994): 80–95. http://dx.doi.org/10.1017/s0022336000025610.

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Heterochrony is an important component of evolutionary change in the shell sculpture of turritelline gastropods from Paleocene and Eocene sediments of the Gulf and Atlantic Coastal Plains. A survey of heterochronic modes in these gastropods indicates that peramorphosis is dominant over paedomorphosis, a result counter to the pattern previously reported in gastropods and most other groups. Although lack of ontogenetic age data makes firm conclusions impossible at present, peramorphic patterns may have been produced by more than a single process. Possible explanations for the dominance of peramo

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UBUKATA, TAKAO. "Mantle kinematics and formation of commarginal shell sculpture in Bivalvia." Paleontological Research 1, no. 2 (1997): 132–43. https://doi.org/10.2517/prpsj.1.132.

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40

Chaban, E. M., I. O. Nekhaev, and P. A. Lubin. "Hermania indistincta comb. nov. (Gastropoda: Opisthobranchia: Cephalaspidea) from the Barents Sea – new species and genus for the fauna of the Russian Seas." Zoosystematica Rossica 24, no. 2 (2015): 148–54. http://dx.doi.org/10.31610/zsr/2015.24.2.148.

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Hermania indistincta (Ohnheiser et Malaquias, 2013) comb. nov. is recorded for the first time for the Barents Sea and the Russian marine fauna. Based on the morphology of the studied specimens the diagnosis of the genus Hermania Monterosato, 1884 is emended. The taxonomic significance of the spiral shell sculpture in the genus Hermania is discussed.

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Nappo, Andrea, and Attilio Pagli. "Description of a new species of Xanthodaphne Powell, 1942 from the Mediterranean and Eastern Atlantic Ocean." Bollettino Malacologico 58, no. 2 (2022): 147–50. http://dx.doi.org/10.53559/bollmalacol.2022.13.

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A new species included in the genus Xanthodaphne Powell, 1942, X. alessandropaglii sp. nov., is described on the basis of its morphological features. The species has been found in the Alboran Sea, Bay of Biscay and in the Selvagens Islands. It is characterized by its slender and very thin shell, with fine spiral sculpture.

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ROTH, BARRY, and JEFF TUPEN. "Revision of the systematic status of Helminthoglypta walkeriana morroensis (Hemphill, 1911) (Gastropoda: Pulmonata)." Zootaxa 616, no. 1 (2004): 1. http://dx.doi.org/10.11646/zootaxa.616.1.1.

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Globose-shelled to depressed-helicoid terrestrial snails of the subgenus Helminthoglypta (Charodotes) occur from the vicinity of Morro Bay to the City of San Luis Obispo in San Luis Obispo County, central California, USA. Populations with intensely papillose shells largely or entirely lacking incised spiral sculpture, originally described as "Helix var. morroensis," have been regarded as either a subspecies of Helminthoglypta walkeriana (Hemphill, 1911) or an infrasubspecific variation without taxonomic significance. Shell form variation is distributed as one would expect if the two major aggr

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OROÑO, EUGENIA SALAS. "Taxonomic review of the Spixia pyriformis species complex (Gastropoda: Pulmonata: Odontostominae)." Zootaxa 1498, no. 1 (2007): 1–25. http://dx.doi.org/10.11646/zootaxa.1498.1.1.

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The genus Spixia (Pilsbry & Vanatta, 1898) is endemic from southern South America. Information about this group is scarce, particularly referring to its anatomy and shell ultrastructure. According to current classification the Spixia pyriformis complex includes the following species, S. doellojuradoi (Parodiz 1941), S. martensii (Doering 1874), S. pyriformis (Pilsbry 1901) and S. tucumanensis (Parodiz 1941). In the present study a complete redescription of the species component of this complex, as well as new information on shell ultrastructure and anatomy of the different organ systems is

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TAVIANI, MARCO, GIANLUIGI BINI, ANDREA NAPPO, and ATTILIO PAGLI. "Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts." Zootaxa 5620, no. 2 (2025): 353–66. https://doi.org/10.11646/zootaxa.5620.2.8.

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The new epitoniid subgenus Depressiphitus, and the new species Iphitus (Depressiphitus) davidei sp. nov., are described upon six shells collected in the north-eastern Atlantic Ocean, from the Coral Patch Seamount (936–965 m), and the Atlantis Seamount (795–830 m). Compared to species placed in the deep-sea genus Iphitus, being similarly equipped with a protoconch reflecting planktotrophic larval development, the new taxon exhibits unique morphological features. A fragile, very globose-depressed shell, coupled with a faint reticulate sculpture not found in other Iphitus species, motivated the e

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Newson, Owen, Rokzanna Basi, and A. Richard Palmer. "Lamellose Axial Shell Sculpture Reduces Gastropod Vulnerability to Sea Star Predation." Biological Bulletin 235, no. 1 (2018): 24–29. http://dx.doi.org/10.1086/698972.

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CRISCIONE, FRANCESCO, and FRANK KÖHLER. "Six new species of Australocosmica Köhler, 2011 from the Kimberley islands, Western Australia (Mollusca: Pulmonata: Camaenidae)." Zootaxa 3608, no. 2 (2013): 101–15. http://dx.doi.org/10.11646/zootaxa.3608.2.1.

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The Western Australian Kimberley region harbours a diverse fauna of camaenid land snails characterised by marked patterns of narrow range endemism. The recently described genus Australocosmica comprised three species that are endemic to single offshore islands or island groups. Material of a further seven candidate species recognised by the late Alan Solem has been examined. Six of these manuscript species, NSP 40 (= A. rotunda n. sp.), NSP 76 (= A. pallida n. sp.), NSP 77 (= A. buffonensis n. sp.), NSP 78 (= A. bernoulliensis n. sp.), NSP 79 (= A. crassicostata n. sp.), and NSP 80 (= A. nana

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Maxwell, Stephen, Aart Dekkers, David Berschauer, and Bradley Congdon. "A new Domiporta species (Gastropoda, Mitridae) from tropical Queensland." Festivus 49, no. 3 (2017): 199–205. http://dx.doi.org/10.54173/f493199.

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A new species of Mitridae, Domiporta valdacantamessae, is described from Dingo Beach, Queensland, Australia. The shell shows similarities with other Queensland Domiporta species: D. carnicolor Reeve, 1844, D. filiaris Linnaeus, 1771, D. gloriola Lamarck, 1811, D. granatina Cernohorsky, 1970 and D. praestantissima Röding 1798, however the new species can be differentiated based on the clathrate micro-sculpture. At present, this species is only known from Queensland, Australia.

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PILATO, GIOVANNI, and OSCAR LISI. "Macrobiotus rigidus sp. nov., new species of eutardigrade from New Zealand." Zootaxa 1109, no. 1 (2006): 49. http://dx.doi.org/10.11646/zootaxa.1109.1.5.

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Macrobiotus rigidus sp. nov. is a new species of eutardigrade from New Zealand very similar to M. coronatus de Barros, 1942. It is characterized by having a smooth cuticle, lacking eye spots, having three macroplacoids and a microplacoid, and eggs with conical processes (with reticular sculpture and an evident ring of basal digitations) and egg shell with dots that seem to continue the basal digitations.

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Klongklaew, Kanyaporn, Supattra Poeaim, and Pongrat Dumrongrojwattana. "Four new species of Georissa W. Blanford, 1864 (Gastropoda, Hydrocenidae) from Thailand." Zoosystematics and Evolution 100, no. 4 (2024): 1347–60. http://dx.doi.org/10.3897/zse.100.128717.

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Hydrocenid snails have received little research attention compared to other land snail groups, arguably due to their small size. The present study examines the diversity of hydrocenid snails in limestone hills in central, eastern and southern Thailand. Four new species of Georissa W. Blanford, 1864 are described: G. quinqueliratasp. nov. from central Thailand, G. sagittasp. nov. and G. kohsichangensissp. nov. from eastern Thailand, and G. digitinotasp. nov. from southern Thailand. These four new species are distinguished by unique characteristics in their shell, including protoconch sculpture

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GEIGER, DANIEL L., and TAKENORI SASAKI. "New Scissurellidae and Anatomidae from Manazuru, Sagami Bay, and Okinawa, Japan (Mollusca: Gastropoda: Vetigastropoda)." Molluscan Research 29, no. 1 (2009): 1–16. http://dx.doi.org/10.11646/mr.29.1.1.

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Three new Scissurellidae and one new Anatoma (Anatomidae) are described from Cape Manazuru, Sagami Bay, and Okinawa, Japan. Sinezona costulata n. sp. from Sagami Bay has a protoconch with strong axial cords, the apertural varix is not connected to the embryonic cap, and the teleoconch sculpture is initially of strong axials, which are replaced on the shoulder at the apertural margin by fine spiral lines. Sinezona milleri n. sp. from Okinawa has a similar protoconch to S. costulata, and the teleoconch sculpture gives rise to a reticulate pattern at the apertural margin. The seven described and

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