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Atrypida

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Journal Article
Published: 01 May 1996
Journal of Paleontology (1996) 70 (3): 532–534.
Journal Article
Published: 01 March 1967
Geological Magazine (1967) 104 (2): 123–131.
...Paul Copper Abstract A simple visual method for distinguishing important Devonian atrypid brachiopod taxa, and for separating the Atrypidae and Palaferellidae family-groups is outlined. The thickness, distribution, and repetition of the three layers of impunctate atrypid shell wall differ markedly...
Journal Article
Published: 01 January 2021
Journal of Paleontology (2021) 95 (1): 75–105.
... is especially rich with 21 species present. Samples from most of these taxa have been sectioned to reveal internal structures for taxonomic study. Of these, 13 species belong to the family Atrypidae, three of which are described in the present paper; Dihelictera engerensis n. sp., Gotatrypa vettrensis n. sp...
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Image
Number of surviving genera with Lazarus genera across the end-Ordovician cr...
Published: 27 February 2006
, whereas Pentameridina (2), ribbed Atrypida (5), and Spiriferida (1) account for less than 10% of the total. Orthida and Strophomenida were significant constituents in the brachiopod surviving after the extinction, whereas Pentameridina, ribbed Atrypida, and Spiriferida, although extremely rare during
Journal Article
Published: 01 May 2021
Journal of Paleontology (2021) 95 (3): 553–567.
...Zhiwei Yuan; Wen Guo; Dan Lyu; Yuanlin Sun Abstract The filter-feeding organ of some extinct brachiopods is supported by a skeletal apparatus called the brachidium. Although relatively well studied in Atrypida and Athyridida, the brachidial morphology is usually neglected in Spiriferida...
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Journal Article
Journal: Paleobiology
Published: 01 June 2015
Paleobiology (2015) 41 (3): 491–501.
... surviving from the previous stage and is identifiable as a statistically supported trend in three orders representing both Class Strophomenata (Order Productida) and Class Rhynchonellata (orders Atrypida and Spiriferida). Extinction exhibits no consistent bias with respect to size. The shift in evolutionary...
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Journal Article
Journal: Paleobiology
Published: 01 January 2015
Paleobiology (2015) 41 (1): 122–133.
... the assemblages from which the specimens were derived. The dorsibiconvex brachiopod morphology is particularly common, especially among the Order Atrypida, yet there have been few independent, biomechanical studies to assess the life orientation of these brachiopods. In this study, we assess potential...
Journal Article
Published: 31 March 2008
Canadian Journal of Earth Sciences (2008) 45 (2): 121–134.
... that there are in total over 30 brachiopod species, of which the Atrypida, Rhynchonellida, Spiriferida, and Athyridida orders are the most dominant groups. Serial transverse sections show that Pseudoatrypa schroeteri possesses small dental cavities, and their spiralia have a whorl number ranging from 12–13 in ca. 29–30...
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Series: AAPG Memoir
Published: 01 January 2003
DOI: 10.1306/M77973
EISBN: 9781629810041
...; Pentamerida; Athyrida (spiralia present, usually impunctate); Atrypida (spiralia present, impunctate); Spiriferida (spiralia present, punctate and impunctate shells); Spiriferinida (spiralia present, impunctate and punctate shells), and Terebratulida (loop present, punctate shell). In general...
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Journal Article
Journal: GSA Bulletin
Published: 01 June 1977
GSA Bulletin (1977) 88 (6): 806–808.
..., Cyrtospirifer sulcifer (Hall), and members of the Atrypidae. Geological Society of America 1977 ...
Journal Article
Published: 01 September 1964
Journal of Paleontology (1964) 38 (5): 805–822.
... or dorsomedially). Subfamilies are given for the smooth Atrypacea in family Lissatrypidae and ribbed Atrypidae. New suborder Retzioidea contains punctate superfamily Retziacea (with new genus Leptospira) and impunctate Athyrisinacea. New suborder Athyridoidea contains superfamily Athyridacea subfamilies...
Journal Article
Published: 01 May 2023
Journal of Paleontology (2023) 97 (3): 539–548.
... al., 1979 ). However, the presence of jugal processes in the mantle cavity (Xu in Jin et al., 1979 , in-text fig. 40) indicates this genus should instead be assigned to the Atrypida and with affinities to the Atrypidae, although spiralia are not illustrated in the initial description of the species...
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Journal Article
Published: 27 February 2006
Canadian Journal of Earth Sciences (2006) 43 (1): 23–39.
..., whereas Pentameridina (2), ribbed Atrypida (5), and Spiriferida (1) account for less than 10% of the total. Orthida and Strophomenida were significant constituents in the brachiopod surviving after the extinction, whereas Pentameridina, ribbed Atrypida, and Spiriferida, although extremely rare during...
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Journal Article
Published: 01 September 2007
Bulletin de la Société Géologique de France (2007) 178 (5): 383–390.
... change). However there is no evidence for an abrupt end to the Atrypida and Pentamerida at the Frasnian/Famennian boundary; they had declined nearly to the point of extinction. For orthids, this decrease corresponds also to the beginning of a general decline during the Upper Palaeozoic [ Williams...
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Total numbers of families and genera through the Ordovician–Silurian transi...
Published: 27 February 2006
1 and 2 (Syntrophidina and Pentameridina), and Atrypida 1 and 2 (smooth and ribbed atrypids). Altogether, there are 24 major groups investigated. Numbers of extinct families and genera are shown at two phases of the extinction. The numbers for the Lazarus taxa are included in survivors. Origination
Journal Article
Published: 01 March 2023
Journal of Paleontology (2023) 97 (2): 292–317.
... Sciences and Engineering Research Council of Canada http://dx.doi.org/10.13039/501100000038 The brachiopod order Atrypida originated during the Ordovician Radiation (sensu Stigall et al., 2019 ) alongside most other brachiopod lineages (Harper et al., 2013 ) and other fossil groups...
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Line graph illustrating close similarity of mean size and trends in mean si...
Published: 01 June 2015
and Rhynchonellida) during post-Paleozoic time and for Rhynchonellida during Paleozoic time. In contrast, three Paleozoic orders (Spiriferida, Atrypida, and Productida) exhibit strong driven trends toward larger size during Paleozoic time. The differing
Journal Article
Published: 01 March 2003
Journal of Paleontology (2003) 77 (2): 243–266.
... to 26.1 mm wide, and may prove to be G. mega . The paucity of specimens, however, precludes a more confident assessment. Superfamily Atrypacea Gill, 1871 Family Atrypidae Gill, 1871 Subfamily Spinatrypinae Copper, 1978 Genus Spinatrypa Stainbrook, 1951 The spinose...
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Journal Article
Published: 01 January 2023
Journal of Paleontology (2023) 97 (1): 76–89.
... Europe and south China : Journal of Paleontology , v. 70 , p. 588 – 602 . Copper , P. , 2002 , Atrypida , in Kaesler , R.L. , ed., Treatise on Invertebrate Palaeontology , Part H...
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Journal Article
Published: 01 September 2007
Geological Magazine (2007) 144 (5): 894.
..., concerns late Ordovician rhynchonelliformean brachiopods from north-central Kazakhstan. The faunas are rich and include many early species of Pentamerida and Atrypida preserved in limestone, and these are interpreted by means of numerous transverse sections illustrated by line drawings, along with good...