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Primaevorana
Discussion
Neobatrachia species from Crato Formation, Lower Cretaceous (Aptian), region of Nova Olinda, Araripe Basin, Cear state, Northeastern Brazil. The exact locality is undetermined.
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Taxonomy
Primaevorana was named by Moura et al. (2021). It is considered to be a form taxon. Its type is Primaevorana cratensis.
It was assigned to Neobatrachia by Moura et al. (2021).
It was assigned to Neobatrachia by Moura et al. (2021).
Species
P. cratensis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2021 | Primaevorana Moura 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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| PHAG. Moura et al. 2021 | Small anuran assigned to Neobatrachia by having free palatines (= neopalatines; Trueb 1993) and on inferred relationships using phenotypic data presented by Baéz & Gomez (2018). The new species differs from pipoids in having a T-shaped parasphenoid and well-developed mentomeckelians. P. cratensis can also be distinguished from all other neobatrachians by the following combination of characters: dentate maxilla; pterygoid with a long medial ramus; clavicle curved and anteriorly concave; coracoid with glenoidal end more expanded than the sternal end.
Primaevorana cratensis can be distinguished from other Crato neobatrachians by the following combination of characters: skull longer than wide (wider than long in Eurycephalella alcinae, equal in Arariphrynus placidoi; Baez et al. 2009); orbital region posteriorly wider than anteriorly (equally wide in Cratia gracilis and Kururubatrachus gondwanicus; Baez et al. 2009, Agnolin et al. 2020); robust clavicle (slender in C. gracilis; Baez et al. 2009); coracoid with an asymmetric sternal end (symmetric in C. gracilis; Baez et al. 2009); humerus not proximally expanded (expanded in K. gondwanicus; Agnolin et al. 2020); femur shorter than tibiofibula (equal lengths in C. gracilis; Baez et al. 2009); tibiale and fibulare lengths that are half the length of the tibiofibula (one third of the length in E. alcinae and Ar. placidoi; Baez et al. 2009); terminal phalanges without protuberances (distal protuberances present in E. alcinae and Ar. placidoi; Baez et al. 2009). |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Uhen 2004, Hendy et al. 2009, Carroll 1988 | |||||
Age range: Late/Upper Aptian or 122.46000 to 113.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Aptian | Brazil (Ceara) | P. cratensis (77891) |