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Kaikaifilusaurus calvoi
Taxonomy
Kaikaifilusaurus calvoi was named by Simon and Kellner (2003). Its type specimen is MPCHv 4, a mandible (left lower jaw, lacking the posterior region), and it is a 3D body fossil. Its type locality is Araceli, on Bustingorry farm, which is in a Cenomanian fluvial sandstone/conglomerate in the Candeleros Formation of Argentina.
It was considered a nomen dubium by Apesteguia and Carballido (2014).
It was considered a nomen dubium by Apesteguia and Carballido (2014).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 2003 | Priosphenodon avelasi Apesteguía and Novas |
| 2003 | Kaikaifilusaurus calvoi Simon and Kellner p. 1 |
| 2019 | Kaikaifilusaurus calvoi Gentil 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.
†Kaikaifilusaurus calvoi Simon and Kellner 2003
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Invalid names: Priosphenodon avelasi Apesteguía and Novas 2003 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Apesteguía and F. E. Novas 2003 (Priosphenodon avelasi) | Priosphenodon differs from other sphenodontians in the following combination of features: robust skeleton with adult up to 1m long; single, sharp, beak-like structure on the rostral end of the skull; bulging nasals; frontals rostrally straight; jugals dorsoventrally deep; suborbital fenestrae closed by transversely oriented ectopterygoids; maxillary and palatine tooth rows elongate, straight and in parallel; palatal roof narrow; teeth closely packed, with imbricate labial and lingual flanges; no caniniform teeth and no dental regionalization; and square, distally expanded unguals. | |
| M. E. Simon and A. W. A. Kellner 2003 | Eilenodontian sphenodontid with lower jaw showing a marked dorsoventral symphysial expansion on the medial surface; dorsoanteriorly oriented edentulous ridge; short anteroposteriorly oriented symphysial shelf; pronounced gap between the coronoid process and the last tooth; and ventral margin of the dentary close to the symphysis strongly concave |
Measurements
No measurements are available
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| Source: subc = subclass, c = class, subp = subphylum | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range: Early/Lower Cenomanian or 100.50000 to 93.90000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Cenomanian | Argentina (Río Negro) | Priosphenodon avelasi (225915) | |
| Early/Lower Cenomanian | Argentina (Neuquén) | Kaikaifilusaurus calvoi (type locality: 118103) |