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Platypterygiidae (disused)
Taxonomy
Platypterygiidae was named by Bardet (1995).
It was assigned to Ichthyosauria by Arkhangelsky et al. (2008); and to Ophthalmosauria by Zverkov (2022).
It was assigned to Ichthyosauria by Arkhangelsky et al. (2008); and to Ophthalmosauria by Zverkov (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Platypterygiidae Bardet |
| 2008 | Platypterygiidae Arkhangelsky et al. |
| 2022 | Platypterygiidae Zverkov p. 466 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. †Platypterygiidae Bardet 1995
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. G. Zverkov 2022 | Diagnosis is difficult to formulate because of the presence of reversed states of all synapomorphies of the clade in some of its members. No one of earlier proposed diagnoses (Bardet, 1995; Arkhangelsky, 2008; Fischer et al., 2012) can be applied in the present understanding of the composition of the group. By the results of the phylogenetic analysis of Zverkov and Jacobs (2021), synapomor- phies of the group are: tightly packed elements in limbs (character 124: state 1) (reversed in some species of Undorosaurus and Grendelius); completely fused ischium and pubis (126 : 2) (reversed in Undorosaurus); rod-like ischiopubis (127 : 1) (reversed in Undorosaurus); well-developed postaxial fifth digit in hindfin (134 : 1). |