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Helochelydra

Osteichthyes

Taxonomy
Helochelydra was named by Nopcsa (1928). Its type is Helochelydra nopcsai.

It was assigned to Helochelydrinae by Nopcsa (1928), Kuhn (1966); to Solemdidae by Lapparent de Broin and Murelaga (1999); to Solemydidae by Milner (2004), Milner (2011), Pérez-García et al. (2012); and to Helochelydridae by Joyce (2017).

Species
H. anglica, H. bakewelli, H. nopcsai (type species)
Entered
by E. Leckey (authorized by J. Alroy) on 2003-11-24; modified by M. Carrano on 2023-04-03

Synonymy list
YearName and author
1928Helochelydra Nopcsa
1966Helochelydra Kuhn p. 25
1999Helochelydra Lapparent de Broin and Murelaga
2004Helochelydra Milner pp. 1456-1457
2011Helochelydra Milner p. 297
2012Helochelydra Pérez-García et al.
2017Helochelydra Joyce

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—ArchelosauriaCrawford 2015
—Pantestudines
—Testudinata(Oppel 1811)
—Helochelydridae()
genusHelochelydraNopcsa 1928

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. †Helochelydra Nopcsa 1928
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†Helochelydra anglica Lydekker 1889
†Helochelydra bakewelli Mantell 1833
†Helochelydra nopcsai Lapparent de Broin and Murelaga 1999
Diagnosis
ReferenceDiagnosis
A. R. Milner 2004(after de Lapparent de Broin and Murelaga 1999). Solemydid with shell decorated completely with separate raised tubercles, thin pustules about 1 mm in diameter forming vermiculate ridges towards the medial parts of the pleurals, entoplastral scute possibly oval/rounded and situated towards the anterior of the entoplastron.