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Steropoides
Taxonomy
Steropoides was named by Hitchcock (1845). It is considered to be a form taxon.
It was assigned to Tridactylidaee by Hitchcock (1845); to Dinosauria by Lull (1904); to Dinosauria by Kuhn (1958); and to Reptilia by Lull (1917) and Kuhn (1963).
It was assigned to Tridactylidaee by Hitchcock (1845); to Dinosauria by Lull (1904); to Dinosauria by Kuhn (1958); and to Reptilia by Lull (1917) and Kuhn (1963).
Synonyms
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Synonymy list
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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.
G. †Steropoides Hitchcock 1845
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†Steropoides divaricatus Hitchcock 1837
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Invalid names: Ornithopus loripes Hitchcock 1848 [synonym], Tridentipes insignis Hitchcock 1858 [synonym]
†Steropoides diversus Hitchcock 1836
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Invalid names: Tridentipes elegans Hitchcock 1841 [synonym]
†Steropoides ingens Hitchcock 1836
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Invalid names: Ornithoidichnites danae Hitchcock 1844 [synonym], Sillimanius adamsanus Hitchcock 1845 [synonym]
†Steropoides uncus Hitchcock 1858
Invalid names: Steropezoum Hitchcock 1848 [synonym], Tridentipes Hitchcock 1858 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. Hitchcock 1848 (Steropezoum) | Toes somewhat keel-shaped; the middle and inner ones curved towards the line of direction; the outer one slightly bent from that line. Heel distinct and large; leaving an impression on mud of radiating ridges and furrows, sloping upwards very gradually behind, more abrupt ly before , leavin g a ridge on the track, at least as high as the general surface, between the heel and the toes, which also slope upwards posteriorly. This ridge, however, has usually a depres sion in it, connec ting the heel and the outer toe. But, upon the whole, we infer that the foot arches upwards between the toes and the heel, leaving, however, a slight ridge along its outer part. Bottom of the heel a little elevated above that of the toes. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988 | |||||
Age range: base of the Late/Upper Triassic to the top of the Hettangian or 237.00000 to 199.30000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Triassic | USA (New Jersey) | Tridentipes ingens (91694) | |
| Hettangian | USA (Massachusetts) | Tridentipes sp., Tridentipes elegans, Tridentipes uncus, Tridentipes elegantior (52986) | |
| Hettangian - Sinemurian | USA (Massachusetts) | Ornithichnites diversus (91666) Ornithichnites diversus, Ornithoidichnites elegans, Tridentipes elegans, Ornithopus loripes, Tridentipes insignis, Ornithoidichnites divaricatus (52993) Ornithichnites diversus, S. infelix, S. uncus (52996) Ornithichnites ingens, Ornithichnites diversus, Ornithoidichnites elegans, Ornithopus loripes, Tridentipes insignis, Ornithoidichnites elegantior, Ornithoidichnites ingens (52985) Ornithoidichnites divaricatus (91398) Ornithoidichnites elegantior (52994) S. ingens, Tridentipes ingens, Tridentipes insignis (53025) Tridentipes elegans, Tridentipes uncus (52998) Tridentipes ingens, Steropezoum elegans (52990) Tridentipes insignis (62844) | |
| Hettangian - Sinemurian | USA (Connecticut) | Ornithoidichnites elegans (53000) S. diversus, S. infelix, Ornithopus loripes, Tridentipes insignis, S. divaricatus (53023) |