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Algorachelus peregrinus

Reptilia - Testudines - Bothremydidae

Taxonomy
Algorachelus peregrinus was named by Pérez-García (2017). Its type specimen is ALG-1, a partial shell (an almost complete and largely undeformed shell), and it is a 3D body fossil. Its type locality is Algora vertebrate site, which is in a Cenomanian/Cenomanian coastal sandstone in the Utrillas Formation of Spain. It is the type species of Algorachelus.

Synonymy list
YearName and author
2017Algorachelus peregrinus Pérez-García p. 2 figs. 2-8

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
RankNameAuthor
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderPleurodira
superfamilyPelomedusoidesBroin 1988
superfamilyPodocnemidoidea
familyBothremydidaeBaur 1891
Bothremydodda
tribeBothremydini
subtribeBothremydina
genusAlgorachelus
speciesperegrinus

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
ReferenceDiagnosis
A. Pérez-García 2017It differs from the other members of Bothremydini by the following character combination: very shallow nuchal notch; wider than long nuchal plate; five (exclusive to this taxon), six or seven neurals; first vertebral on the first pair of peripherals or reaching the second; each scute of the first pair of marginals much wider than long; overlap of the first pair of marginals on no more than half of the nuchal anterolateral margin; medial contact of the humerals; absence of overlap of the pectorals on the epiplastra; overlap of the pectorals on the entoplastron; pectoro-abdominal sulci crossing the mesoplastra; laterally positioned orbits; well-developed posterior projection of each squamosal; supraoccipital-quadrate contact; maxilla-quadrate contact; presence of a pit on each triturating surface; very wide posterior triturating surfaces; rounded lateral edges of the maxillae; no accessory ridges on the triturating surfaces; large exposure of the jugals on the triturating surfaces; triangular basisphenoid in ventral view; prootics not exposed in ventral view; relatively shallow fossa pterygoidea.