Taxonomic Notes on Isognomonidae and Bakevellidae

Cox, L. R.

doi:10.1093/oxfordjournals.mollus.a064724

Cited by 12 publications

(21 citation statements)

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“…The first Pterioidea (placed in the single family Pterineidae Meek, 1864) appeared in the lower Middle Ordovician (Pojeta & Runnegar, 1985) and are hypothesized to have evolved from the stem group, the family Umburridae Johnston, 1991, based on hinge morphology, shell inequivalvity, muscle scars, and stratigraphic evidence (Johnston, 1991a; Waller, 1998). The Permo‐Triassic boundary marks the extinction of Pterineidae, the only exclusively Palaeozoic pterioid family, and the origin and diversification of Pteriidae, Isognomonidae, and Bakevelliidae King, 1950 (the latter becoming extinct in the Eocene; Cox, 1954, 1969a). The two other extant families – Pulvinitidae and Malleidae – evolved, respectively, in the Jurassic (Cox, 1969c) and the Cretaceous (Waller, 1978, 1985).…”

Section: Introductionmentioning

confidence: 99%

Morphological perspective on the classification and evolution of Recent Pterioidea (Mollusca: Bivalvia)

Tëmkin

2006

Zoological Journal of the Linnean Society

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The evolutionary relationships of the Recent Pterioidea are inferred from a phylogenetic analysis of representatives of all pterioidean genera based on original observations of anatomy and shell morphology, and an extensive survey of bivalve literature. The well‐resolved cladogram supports monophyly for the superfamily, but renders all but one family (the monotypic Pulvinitidae) polyphyletic. In addition, these results reveal a considerable level of convergence and parallelisms through the Pterioidea. The branching order of pterioid genera in the morphological analysis is largely corroborated by the sequence of their appearance in the fossil record. The palaeontological evidence provides important information on dating lineage splitting events and transitional taxa. The proposed phylogeny integrates the cladistic analysis of the Recent Pterioidea with the fossil record and suggests that the crown‐group pterioideans probably originated in the Triassic from the Bakevelliidae, an extinct paraphyletic stem group from which the Ostreoidea are also ultimately derived. © 2006 The Linnean Society of London, Zoological Journal of the Linnean Society, 2006, 148, 253–312.

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Section: Introductionmentioning

confidence: 99%

Morphological perspective on the classification and evolution of Recent Pterioidea (Mollusca: Bivalvia)

Tëmkin

2006

Zoological Journal of the Linnean Society

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“…Modiola ? alaeformis Sowerby, 1819; Lower Cretaceous; Isle of Wight; UK, by original designation (Cox ).…”

Section: Genus Cf Gervillaria (Crickmay )mentioning

confidence: 99%

Early Triassic benthic invertebrates from the Great Bank of Guizhou, South China: systematic palaeontology and palaeobiology

Foster

Lehrmann

Hirtz

et al. 2019

Papers in Palaeontology

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To further our understanding of the evolution, selectivity and ecological composition of marine communities following the latest Permian mass extinction, new collections from underrepresented regions in the immediate extinction aftermath are required. Here, we provide new systematic data and the first palaeobiological account of the benthic invertebrate community from the Great Bank of Guizhou, South China. We systematically describe three brachiopod species, 26 bivalve species, 11 gastropod species, 1 microconchid and 1 crinoid species. The descriptions include 5 new species; 2 bivalve species (Hoernesia? danisae, Atomodesma? hautmanni) and 3 gastropod species (Donaldina erwini, Cossmannina alfischeri and Vernelia samae). This is the most species-rich benthic community known so far from the extinction aftermath, which is typically characterized by a high proportion of Permian holdover genera and cosmopolitan taxa. Taxonomically, this community is different from coeval faunas with dissimilarity values >60%. Ecologically, however, this fauna is similar to faunas from the Dolomites (Italy) and East Greenland. This new data, therefore, suggests that the lower Griesbachian invertebrate faunas were taxonomically heterogeneous, whereas ecologically they were relatively homogenous. The marine community on the Great Bank of Guizhou records genera that survived the mass extinction event with some, but not all, recording a size reduction, that is, the Lilliput effect. The absence of large body fossils and the preferential survival of small species suggest that the mass extinction event was size-selective.

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“…Despite their abundance and diversity, the ‘inoceramids’ are a poorly understood set of bivalves, and especially Jurassic taxa allied to this group have been the subject of many controversies about their affinities (Crame, 1982; Crampton, 1996; Knight and Morris, 2009). In this context, several species of small pterioid bivalves known from Jurassic deposits worldwide, some of them formerly referred to “ Inoceramus ”, were regarded by Cox (1954) as belonging to a separate genus, which he referred to Parainoceramus Cox, 1954 ( ex Voronetz, 1936 [unavailable due to lack of type species designation]) instead of proposing a new taxon. This decision, which was followed by most subsequent authors, was later proved to be inadequate for several reasons discussed in this paper.…”

Section: Introductionmentioning

confidence: 99%

“…Years later Cox (1954) completed the requirements for the validity of the name by designating P . bulkurensis (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Cox’s (1954) concept of the genus Parainoceramus was adopted by nearly all later authors dealing with Jurassic material (i.e., Hayami, 1960; Speden, 1970; Duff, 1978; Crame, 1982; Kelly, 1984; Damborenea, 1987, 1990; Chen, 1988; Conti and Monari, 1991; Monari, 1994; Knight and Morris, 2009), and more Jurassic species from around the world were added (Table 1). Nevertheless, it is evident that this was often done in the absence of a better alternative; hence, almost all authors felt the need to provide their own diagnosis of the genus.…”

Section: Introductionmentioning

confidence: 99%

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Parainoceramyan. gen. forParainoceramusCox, 1954 (exVoronetz, 1936)partim(Bivalvia, Jurassic)

et al. 2015

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Several Jurassic pterioid bivalve species have been referred toParainoceramusCox by different authors, yet this has proved inadequate because the meaning of such genus has been compounded by nomenclatural and idiomatic problems, as well as misinterpretations. Hence, the new genusParainoceramyais here proposed to accommodate several species previously referred toParainoceramus, withCrenatula ventricosaJ. de C. Sowerby as its type. Permian species originally assigned toParainoceramus, including the type species, are referred to the genusKolymiaLikharev. All species attributed toParainoceramuss.l. are reviewed and the new genus is compared with related genera. As here understood, the new genus is first recorded in the Hettangian and attained a cosmopolitan distribution; its last occurrence is probably Berriasian.

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Taxonomic Notes on Isognomonidae and Bakevellidae

Cited by 12 publications

References 0 publications

Morphological perspective on the classification and evolution of Recent Pterioidea (Mollusca: Bivalvia)

Morphological perspective on the classification and evolution of Recent Pterioidea (Mollusca: Bivalvia)

Early Triassic benthic invertebrates from the Great Bank of Guizhou, South China: systematic palaeontology and palaeobiology

Parainoceramyan. gen. forParainoceramusCox, 1954 (exVoronetz, 1936)partim(Bivalvia, Jurassic)

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