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Heteropinnatoidea (disused)
Taxonomy
Heteropinnatoidea was named by Appleby (1979).
It was assigned to Ichthyopterygia by Appleby (1979).
It was assigned to Ichthyopterygia by Appleby (1979).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Heteropinnatoidea Appleby pp. 941-942 |
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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.
Or. †Heteropinnatoidea Appleby 1979
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Invalid names: Leptopterygiidae Kuhn 1934 [empty], Protoichthyosauridae Appleby 1979 [empty]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. M. Appleby 1979 | "Ichthyopterygia with at least one fore limb with a fourth primary digit originating (1) on the radial side from a row of three distal carpals, (2) on the radial side from a carpus comprising a row of four distal carpals plus a supernumerary bone more proximally placed, and (3) on the ulnar side from four distal carpals. (1) and (2) are latipinnatoid-like, (3) is longipinnatoid-like. Nasal opening primitive (lachrymal takes part in boundary). Orbit at small end of longipinnate values given by McGowan (1972). Ratio of distance between tip of snout and anterior tip of maxilla to length of jaw intermediate between longipinnatoids and latipinnatoids in (1) and (2). Ratio large in (3). Interclavicle T-shaped. Coracoid with well-developed posterior notch in (1) and (2). Coracoids with all gradations between longipinnatoids and latipinnatoids in (3). Glenoid anteriorly placed. Neural spines without caudal rise. Rib facets rise caudally to maximum dorsal position at tail-bend. Tail with vertical flukes. Pelvic elements separate but abbreviated. No pubic foramen. Hind limb relatively short in (1) and (2) and relatively long in (3). Range: Lower Liassic." |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available