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Plastremys lata
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).
It was recombined as Hylaeochelys lata by Lydekker (1889).
Synonymy list
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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
Reference | Diagnosis | |
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W. G. Joyce 2022 | Plastremys 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
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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 |
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Albian - Early/Lower Cenomanian | United Kingdom (England) | Plastremys lata (type locality: 198090) | |
Middle Cenomanian - Late/Upper Cenomanian | Spain (Castilla-La Mancha) | Solemydidae indet. (132494) |