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Eichstaettisaurus
Taxonomy
Eichstaettisaurus was named by Kuhn (1958). It is the type genus of Eichstaettisauridae.
It was assigned to Lacertilia by Kuhn (1964); to Eichstaettisauridae by Cocude-Michel (1963) and Kuhn (1966); to Ardeosauridae by Estes (1983) and Carroll (1988); and to Squamata by Evans et al. (2004), Bolet and Evans (2010) and Houssaye et al. (2013).
It was assigned to Lacertilia by Kuhn (1964); to Eichstaettisauridae by Cocude-Michel (1963) and Kuhn (1966); to Ardeosauridae by Estes (1983) and Carroll (1988); and to Squamata by Evans et al. (2004), Bolet and Evans (2010) and Houssaye et al. (2013).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Broilisaurus Hoffstetter |
| 1958 | Eichstaettisaurus Kuhn |
| 1963 | Eichstaettisaurus Cocude-Michel |
| 1964 | Broilisaurus Kuhn p. 324 |
| 1964 | Eichstaettisaurus Kuhn p. 324 |
| 1966 | Eichstaettisaurus Kuhn p. 47 |
| 1983 | Eichstaettisaurus Estes |
| 1988 | Eichstaettisaurus Carroll |
| 2004 | Eichstaettisaurus Evans et al. |
| 2010 | Eichstaettisaurus Bolet and Evans |
| 2013 | Eichstaettisaurus Houssaye et al. |
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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. †Eichstaettisaurus Kuhn 1958
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†Eichstaettisaurus gouldi Evans et al. 2004
†Eichstaettisaurus schroederi Broili 1938
Invalid names: Broilisaurus Hoffstetter 1953 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. E. Evans et al. 2004 | Squamate genus characterised by the combination of a dorsoventrally compressed head; single frontal with distinct orbital narrowing, strong cristae cranii, and a wide posterior border; simple abutting frontoparietal suture with no overlap surfaces or interdigitation; short maxilla that does not extend beyond midpoint of orbital rim; small unicuspid teeth with labiolingually flattened tips; limbs short in relation to length of presacral column; epipodials shorter than propodials, but particularly so on the hind limb; manus and pes similar in length to their respective propodials, and without marked disparity in length between the inner and outer digits.
Differs from Ardeosaurus (Upper Jurassic, Germany: Mateer 1982) in having narrow conjoined frontals (rather than wide and paired), a more open upper temporal fenestra (constricted in Ardeosaurus), and a simple rather than interdigitated frontoparietal suture; differs from Ardeosaurus and Meyasaurus (Lower Cretaceous, Spain: Evans and Barbadillo 1997) in lacking cranial sculpture; resembles Ardeosaurus, Bavarisaurus (Upper Jurassic, Germany: Hoffstetter, 1964), Scandensia (Lower Cretaceous, Spain: Evans and Barbadillo 1998), Huehuecuetzpalli (Lower Cretaceous, Mexico: Reynoso 1998), and Hoyalacerta (Lower Cretaceous, Spain: Evans and Barbadillo 1999), and differs from Meyasaurus, Chometokadmon (Lower Cretaceous, Italy: work in progress), and paramacellodids (Upper Jurassic–Lower Cretaceous, Laurasia and Africa: Evans and Chure 1998) in having paired, rather than fused, premaxillae; differs from Bavarisaurus, Meyasaurus, Chometokadmon, and Huehuecuetzpalli in having a relatively short symmetrical pes (rather than elongate and strongly asymmetrical), and from Bavarisaurus, Hoyalacerta, and Huehuecuetzpalli in having a broad squamosal; differs from paramacellodids in lacking bony osteoscutes; resembles Huehuecuetzpalli, Bavarisaurus, and Scandensia and differs from Hoyalacerta, Ardeosaurus, and paramacellodids in having amphicoelous rather than procoelous vertebrae; differs from Chometokadmon in the much shorter parietal; differs from Huehuecuetzpalli in having short, rather than elongated, premaxillae and larger postfrontals (vestigial in the Mexican form); differs from Meyasaurus in frontal morphology (that of Meyasaurus is exceptionally narrow); differs from Scandensia in lacking the slender, greatly elongated penultimate phalanges; differs from Sakurasaurus (Lower Cretaceous, Japan: Evans and Manabe 1999), Meyasaurus and Tarratosaurus (Lower Cretaceous, Morocco: Broschinski and Sigogneau-Russell 1996) in having a simple homodont dentition (wide durophagous teeth in Sakurasaurus, bicuspid teeth in Meyasaurus, few robust teeth in Tarratosaurus); differs from the enigmatic Hodzhakulia (Lower Cretaceous, Central Asia: Nessov 1985, 1997) in having a longer jaw and smaller teeth; and differs from Hoyalacerta in having a broader skull (narrow in Hoyalacerta). Yabeinosaurus (Lower Cretaceous, China: Endo and Shikama 1942) has never been redescribed in detail, while two new Chinese lizards from the same deposits (Dalinghosaurus, Ji, 1998; Jeholacerta, Ji, and Ren 1999) have yet to be adequately characterised. |