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Neokotus sanfranciscanus

Reptilia - Paramacellodidae

Discussion

The specic epithet alludes to the Sanfranciscana Basin, which is eponymous of the So Francisco river. urn:lsid:zoobank.org:act:68BF448E-D95A-45C98BA7-B7982C5F4558

Taxonomy
Neokotus sanfranciscanus was named by Souza Bittencourt et al. (2020). Its type specimen is IGC-P 0085, a partial skeleton, and it is a 3D body fossil. Its type locality is near Joao Pinheiro, which is in a Barremian/Aptian lacustrine - small mudstone in the Quiricó Formation of Brazil.

Synonymy list
YearName and author
2020Neokotus sanfranciscanus Souza Bittencourt et al. p. 2

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
RankNameAuthor
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Squamata()
superfamilyScincoideaOppel 1811
familyParamacellodidae
genusNeokotus
speciessanfranciscanus

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.

†Neokotus sanfranciscanus Souza Bittencourt et al. 2020
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Diagnosis
ReferenceDiagnosis
J. Souza Bittencourt et al. 2020Neokotus sanfranciscanus can be distinguished from all other squamate species by the following combination of features: premaxillae fused to one another, dentary crista dentalis robust anteriorly and smoothly decreasing in height posteriorly*; posterior part of the dentary dorsoventrally short and bearing a narrow dental sulcus; dentary ventral crest very robust at the posterior end of the Meckelian canal*; splenial anteriorly notched and short, with its anterior end at the level of the posterior half of the dentary*; conical and relatively narrow teeth in medial view; labiolingually expanded tooth bases, with no anterolingual rotation; lingually concave tooth crowns with no accessory lingual cusps; dorsal vertebrae with a strongly developed midventral crest; ungual phalanges with a flat and laterally expanded base*. Features highlighted with an asterisk (*) are unique to this taxon among paramacellodids. In particular, the flat and laterally expanded bases of the unguals are unique among all squamates (living or extinct).
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialuc
Locomotion: actively mobilec
Created: 2017-04-17 15:15:35
Modified: 2017-04-17 15:15:35
Source: c = class, subp = subphylum, uc = unranked clade
References: Hendy et al. 2009, Carroll 1988

Age range: base of the Barremian to the top of the Aptian or 129.40000 to 113.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Barremian - Aptian129.4 - 113.0Brazil (Minas Gerais) Neokotus sanfranciscanus (type locality: 209377)