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Plastremys lata

Reptilia

Taxonomy
Plastremys lata was named by Owen (1881). Its type specimen is BMNH R48, a partial shell, and it is a 3D body fossil. Its type locality is St. Lawrence, Isle of Wight (lower Upper Greensand), which is in an Albian/Cenomanian carbonate chert/sandstone in the Upper Greensand Formation of the United Kingdom.

It was recombined as Hylaeochelys lata by Lydekker (1889).

Synonymy list
YearName and author
1881Plastremys lata Owen p. 370
1889Hylaeochelys lata Lydekker p. 195
2017Plastremys lata Joyce
2022Plastremys lata Joyce

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
RankNameAuthor
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
Helochelydridae()
genusPlastremysOwen 1881
specieslataOwen 1881

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.

Plastremys lata Owen 1881
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Diagnosis
ReferenceDiagnosis
W. G. Joyce 2022Plastremys lata can be diagnosed as a representative of Helochelydridae by the presence of a large plastron with rounded lobes, enlarged mesoplastra with a full midline contact, and an osseous bridge. A shell surface texture consisting of raised tubercles is only indistinctly developed as low welts in the bridge region. The central portion of the plastron lacks a distinct surface texture. All other known helochelydrids have a more distinct shell surface texture consisting of raised tubercles.
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 Middle Cenomanian to the top of the Late/Upper Cenomanian or 99.60000 to 93.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Albian - Early/Lower Cenomanian113.0 - 93.5United Kingdom (England) Plastremys lata (type locality: 198090)
Middle Cenomanian - Late/Upper Cenomanian99.6 - 93.5Spain (Castilla-La Mancha) Solemydidae indet. (132494)