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8,443 results for “gastropoda”
Figure 1 in Provannid and provannid-like gastropods from the Late Cretaceous cold seeps of Hokkaido (Japan) and the fossil record of the Provannidae (Gastropoda: Abyssochrysoidea)
Figure 1. Sketch map of the provannid-bearing localities discussed in the text. A, Nakagawa area. B, Tappu area. C, Hokkaido of Japan with Cretaceous Yezo fore-arc basin deposits indicated.
Figure 4 in Provannid and provannid-like gastropods from the Late Cretaceous cold seeps of Hokkaido (Japan) and the fossil record of the Provannidae (Gastropoda: Abyssochrysoidea)
Figure 4. Juvenile Recent Provannidae and Abyssochrysidae (A–D) and patterns of shell decolation and preservation (E–F). A, E, Desbruyeresia spinosa Warén & Bouchet, 1993 from North Fiji Basin (specimen illustrated also in Warén & Bouchet, 1993: fig. 44D). A, decollate protoconch; E, details of decollation; note no signs of shell abrasion on the protoconch edges B, decollated protoconch of Alviniconcha hessleri Okutani & Ohta, 1988 from north Fiji Basin (specimen illustrated also in Warén & Bouchet, 1993: fig. 44C). C, paucispiral protoconch of Provanna segonzaci Warén & Ponder, 1991 from Lau Basin. D, Abyssochrysos sp. from off New Caledonia; note axial ribs and spiral riblets at the beginning of paucispiral protoconch. F, decollation pattern of terrestrial gastropod Rumina decollata Linné, 1758. G, typical pattern of in-vivo apex erosion in Phymorhynchus sp. shell from the Lucky Strike site on the Mid-Atlantic Ridge; note shell surface abrasion but no sign of decollation.
Figure 13 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 13. Helicellinae from Crete: shells. A, Pseudoxerophila oertzeni (Maltzan, 1887), Omalos (syntype; ZMB 39570). B, Pseudoxerophila oertzeni (Maltzan, 1887), north-western side of Limni Kourna (RMNH). C, Xeromunda candiota (L. Pfeiffer, 1849), Mesohori (ZMH 29990). D, Xerotricha apicina (Lamarck, 1822), Limin Chersonisou (ZMH 36954). E, Xerotricha conspurcata (Draparnaud, 1801), Stalida (ZMH 36202). F, Microxeromagna lowei (Potiez & Michaud, 1835), Greece, Lakonia, Sgardelianika near Neapoli (ZMH 51215). Scale bar: 5 mm.
Figure 15 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 15. Helicellinae from Crete: shells. A, Cernuella (Cernuella) virgata (Da Costa, 1778), Roustika, 0.2 km towards Rethimnon (ZMH 36110). B, Cernuella (Cernuella) virgata (Da Costa, 1778) ('cisalpina'), Kato Zakros (ZMH 27083). Scale bar: 10 mm.
Figure 14 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 14. Helicellinae from Crete: genitalia. Scale bar: 1 mm. A, Pseudoxerophila oertzeni (Maltzan, 1887), Omalos (ZMH 29719). B, Xeromunda candiota (L. Pfeiffer, 1849), Drapanos, 4 km towards Kokkinio Chorio (ZMH 36255). C, Xerotricha apicina (Lamarck, 1822), Corsica, Cardo (from Giusti & Manganelli, 1989: fig. 4B). D, Xerotricha conspurcata (Draparnaud, 1801), Sardinia, Valletta Logulentu (from Giusti & Manganelli, 1989: fig. 2B). E, Microxeromagna lowei (Potiez & Michaud, 1835), Greece, Lakonia, Sgardelianika near Neapoli (from Hausdorf, 1990b: fig. 1). F, Cernuella (Cernuella) virgata (Da Costa, 1778), Roustika, 0.2 km towards Rethimnon (ZMH 36110).
Figure 12 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 12. Distribution of Helicellinae on Crete (UTM grid, 10-km squares): •, records for which vouchers have been checked; -, records from the literature. A, Trochoidea pyramidata (Draparnaud, 1805). B, Xeropicta krynickii (Krynicki, 1833). C, Pseudoxerophila bathytera (Westerlund & Blanc, 1879). D, Pseudoxerophila oertzeni (Maltzan, 1887). E, Xeromunda candiota (L. Pfeiffer, 1849). F, Xerotricha apicina (Lamarck, 1822). G, Xerotricha conspurcata (Draparnaud, 1801). H, Microxeromagna lowei (Potiez & Michaud, 1835). I, Cernuella (Cernuella) virgata (Da Costa, 1778).
Figure 10 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 10. Helicellinae from Crete: genitalia. Scale bar: 1 mm. A, Xerocrassa rhithymna sp. nov., Moni Arkadiou, 3 km towards Thronos (holotype; ZMH 51067). B, Xerocrassa siderensis (Maltzan, 1883), Vai Finikodasos (ZMH 29445). C, Xerocrassa subvariegata (Maltzan, 1883), Chania, towards Rethimnon, at branch towards Souda (ZMH 29318). D, Trochoidea pyramidata (Draparnaud, 1805), Ierapetra, 6 km towards Makrigialos (ZMH 36466). E, Xeropicta krynickii (Krynicki, 1833), Limni Kourna (ZMH 29778). F, Pseudoxerophila bathytera (Westerlund & Blanc, 1879), Sikologos, 2 km towards Mirtos (ZMH 29524).
Figure 11 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 11. Helicellinae from Crete: shells. A, Trochoidea pyramidata (Draparnaud, 1805), Ierapetra, 6 km towards Makrigialos (ZMH 36466). B, Xeropicta krynickii (Krynicki, 1833), Limni Kourna (ZMH 29778). C, Pseudoxerophila bathytera (Westerlund & Blanc, 1879), Hagioi Pantés [syntype of Helix bathytera Westerlund & Blanc; NMGW]. D, Pseudoxerophila bathytera (Westerlund & Blanc, 1879), Mount Jouchtas [syntype of Helix suspecta Westerlund; NMGW]. E, Pseudoxerophila bathytera (Westerlund & Blanc, 1879), Ierapetra (syntype of Helix hierapetrana Maltzan; ZMB 39561). F, Pseudoxerophila bathytera (Westerlund & Blanc, 1879), Moni Toplou [syntype of Helix sitiensis Maltzan; ZMB 39576]. Scale bar: 5 mm for A; 10 mm for D–F.
Figure 7 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 7. Xerocrassa species from Crete: genitalia. Scale bar: 1 mm. A, Xerocrassa kydonia sp. nov., Koutsomatados (holotype; ZMH 51069). B, Xerocrassa lasithiensis sp. nov., Lenika, 1 km towards Elounda (holotype; ZMH 51071). C, Xerocrassa meda (Porro, 1840), Malta, Sliema (from Giusti et al., 1995: fig. 542). D, Xerocrassa mesostena (Westerlund, 1879), Ano Arhanes, top of Mount Jouchtas (ZMH 29912). E, Xerocrassa mesostena (Westerlund, 1879), Ano Viannos, 1 km towards Mirtos (ZMH 29753). F, Xerocrassa mesostena (Westerlund, 1879), Moni Assomaton, 0.3 km towards Vistagi (ZMH 50033).
Figure 9 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 9. Xerocrassa species from Crete: shells. A, Xerocrassa mesostena (Westerlund, 1879), Moni Assomaton (syntype of Helix psiloritana Maltzan; ZMB 36374). B, Xerocrassa rhithymna sp. nov., Moni Arkadiou, 3 km towards Thronos (holotype; ZMH 51067). C, Xerocrassa siderensis (Maltzan, 1883), Cape Sideros (syntype of Helix siderensis Maltzan; ZMB 111957). D, Xerocrassa siderensis (Maltzan, 1883), 'Lassiti' (holotype of Helix euphacodes Maltzan; ZMB 101443). E, Xerocrassa subvariegata (Maltzan, 1883), Tuzla (syntype ZMB 36377). Scale bar: 5 mm.
Figure 2 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 2. Xerocrassa species from Crete: shells. A, Xerocrassa amphiconus (Maltzan, 1883), Sitia, Moni Toplou, MU29 (syntype ZMB 39695). B, Xerocrassa cretica (L. Pfeiffer, 1841), Crete (syntype of Helix cretica forma alba Westerlund & Blanc; NMGW). C, Xerocrassa cretica (L. Pfeiffer, 1841), Crete (Syntype of Helix curetum Westerlund; NMGW). D, Xerocrassa cretica (L. Pfeiffer, 1841), Elassa Island (syntype of Helix gradilis Martens; ZMB 42683). E, Xerocrassa franciscoi sp. nov., Ano Kapetaniana, 7 km towards Agios Ioannis (holotype; ZMH 51072). Scale bar: 5 mm for A, D, and E; 10 mm for B and C.
Figure 4 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 4. Xerocrassa species from Crete: penial papillae. Scale bar: 0.5 mm. A, Xerocrassa amphiconus (Maltzan, 1883), Moni Toplou, 0.7 km towards Sitia (ZMH 36606). B, Xerocrassa cretica (L. Pfeiffer, 1841), Zakros, 3 km towards Kato Zakros (ZMH 29343). C, Xerocrassa grabusana sp. nov., 2 km north of Kaliviani (ZMH 29885). D, Xerocrassa kydonia sp. nov., Mesavlia, 1.8 km towards Chania (ZMH 36893). E, Xerocrassa mesostena (Westerlund, 1879), Listaros, 1 km towards Moni Odigitrias (ZMH 36339).
Figure 1 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 1. Terminology of the distal parts of the genitalia: ap, appendix; at, atrium; bc, bursa of the bursa copulatrix; da, dart apparatus; ep, epiphallus; fl, flagellum; fod, free oviduct; gm, glandulae mucosae; p, penis; ped, pedunculus; pr, penial retractor; sod, spermoviduct; vag, vagina; vd, vas deferens.
Figure 3 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 3. Xerocrassa species from Crete: genitalia. Scale bar: 1 mm. A, Xerocrassa amphiconus (Maltzan, 1883), Agia Fotia (ZMH 18645). B, Xerocrassa cretica (L. Pfeiffer, 1841), Palekastro, 4.7 km towards Vai (ZMH 36579). C, Xerocrassa cretica (L. Pfeiffer, 1841) ('gradilis'), Palekastro, 4.7 km towards Vai (ZMH 50001). D, Xerocrassa franciscoi sp. nov., Ano Kapetaniana, 7 km towards Agios Ioannis (holotype; ZMH 51072). E, Xerocrassa grabusana sp. nov., Kaliviani, 5.5 km towards Balos (holotype; ZMH 51070). F, Xerocrassa heraklea sp. nov., Stalida, 3 km towards Mohos (holotype; ZMH 51068).
Figure 6 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 6. Xerocrassa species from Crete: shells. A, Xerocrassa grabusana sp. nov., Kaliviani, 5.5 km towards Balos (holotype; ZMH 51070). B, Xerocrassa heraklea sp. nov., Stalida, 3 km towards Mohos (holotype; ZMH 51068). C, Xerocrassa kydonia sp. nov., Koutsomatados (holotype; ZMH 51069). D, Xerocrassa lasithiensis sp. nov., Lenika, 1 km towards Elounda (holotype; ZMH 51071). E, Xerocrassa meda (Porro, 1840), Chania (MAA). Scale bar: 5 mm.
Figure 8 in Revision of the Helicellinae of Crete (Gastropoda: Hygromiidae)
Figure 8. Xerocrassa species from Crete: shells. A, Xerocrassa mesostena (Westerlund, 1879), Arhanes (syntype of Helix mesostena Westerlund); NMGW]. B, Xerocrassa mesostena (Westerlund, 1879), Sfakia (syntype of Helix sphakiota Maltzan; ZMB 111956). C, Xerocrassa mesostena (Westerlund, 1879), Paleochora, 1.5 km towards Koundoura (ZMH 29603). D, Xerocrassa mesostena (Westerlund, 1879), Tapes, 2.5 km towards Agios Nikolaos (ZMH 36666). Scale bar: 5 mm.
Figure 14 in Systematic revision of the genus Everettia Godwin-Austen, 1891 (Mollusca: Gastropoda: Dyakiidae) in Sabah, northern Borneo
Figure 14. Phylogenetic reconstructions and character evolution. Values at the upper node are bootstrap values from maximum parsimony (MP) and Bayesian analysis (BA) posterior probabilities are at the lower nodes. Both MP and BA support clade A, which consists of species with the same mantle pigmentation, and two subclades, i.e. A1 and A2, characterized by two different head colour patterns. All the species in clade B are without prominent sculpture, but there are discrepancies in mantle and head colour patterns (subclades B1, B2, and B3). For acronyms of the character states and species numbers see Table 1.
Figure 11 in Systematic revision of the genus Everettia Godwin-Austen, 1891 (Mollusca: Gastropoda: Dyakiidae) in Sabah, northern Borneo
Figure 11. Shell surface sculptures (scanning electron micrographs). A, upper surface of Everettia corrugata williamsi ssp. nov.; B, underside of E. corrugata williamsi ssp. nov.; C, underside of Everettia lapidini; D, upper surface of Everettia occidentalis sp. nov.; E, corrugation at the suture of Everettia corrugata corrugata; F, upper surface of Everettia jucundior sp. nov. Scale bar = 500 Mm.
Figure 10 in Systematic revision of the genus Everettia Godwin-Austen, 1891 (Mollusca: Gastropoda: Dyakiidae) in Sabah, northern Borneo
Figure 10. Shell surface sculptures (scanning electron micrographs). A, upper surface of Everettia jasilini sp. nov.; B, underside of E. jasilini sp. nov.; C, upper surface of Everettia safriei sp. nov.; D; underside of Everettia paulbasintali sp. nov.; E, upper surface of E. paulbasintali sp. nov.; F, underside of Everettia klemmantanica; G, upper surface on the fourth whorl of E. klemmantanica; H, upper surface on the second whorl of E. klemmantanica. Scale bar = 100 Mm.
Figure 7. Genitalia. A in Systematic revision of the genus Everettia Godwin-Austen, 1891 (Mollusca: Gastropoda: Dyakiidae) in Sabah, northern Borneo
Figure 7. Genitalia. A, Everettia klemmantanica; B, Everettia lapidini sp. nov.; C, Everettia paulbasintali sp. nov.; D, Everettia subconsul; E, Everettia themis; F, Everettia layanglayang sp. nov.; G, Everettia jucundior sp. nov.; H, Everettia interior sp. nov.; I, Everettia corrugata corrugata.
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Allen Brain Atlas
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