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Helochelydra nopcsai

Reptilia -

Taxonomy
Helochelydra nopcsai was named by Lapparent de Broin and Murelaga (1999). Its type specimen is BMNH R171, a partial skeleton (substantial portions of a highly fragmented shell with girdle elements), and it is a 3D body fossil. Its type locality is Isle of Wight (general), which is in a Barremian/Aptian terrestrial horizon in the United Kingdom. It is the type species of Helochelydra.

Synonymy list
YearName and author
1999Helochelydra nopcsai Lapparent de Broin and Murelaga pp. 185-192 figs. Pl. 7-8
2004Helochelydra nopcsai Milner p. 1457 figs. Text-figure 10A
2011Helochelydra nopcsai Milner p. 299 fig. 23.3C
2017Helochelydra nopcsai Joyce

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
RankNameAuthor
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
Mesochelydia
Perichelydia
Helochelydridae()
genusHelochelydraNopesa 1928
speciesnopcsaiLapparent de Broin and Murelaga 1999

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. R. Milner 2004Species of Heleochelydra in which the hyoplastron has the following characters (see Text-fig. 10A): ventral surface covered with prominent raised discrete tubercles; border with entoplastron is straight, suture with epiplastron is angled with its distal end anterior to its medial end; suture with entoplastron occupies half of width of anterior ramus of hyoplastron; medial border between humeral and pectoral scutes not visible.