Trionychia

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Trionychia
Temporal range: Late Jurassic to recent, 161.2–0 Ma
PreꞒ
O
S
D
C
P
T
J
K
Pg
N
Apalone spinifera.jpg
The spiny softshell turtle (Trionychidae)
Carettochelys insculpta 01.JPG
The pig-nosed turtle (Carettochelyidae)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Clade: Polycryptodira
Superfamily: Trionychia
Hummel, 1929[1]
Families

Carettochelyidae
Trionychidae
and see text

Synonyms
  • Trionychoidea

Trionychia is a superfamily of turtles which encompasses the species that are commonly referred to as softshelled turtles as well as some others. The group contains two families, Carettochelyidae, which has only one living species, the pig-nosed turtle (Carettochelys insculpta) native to New Guinea and Northern Australia, and Trionychidae, the softshelled turtles, containing numerous species native to Asia, North America and Africa. The oldest known stem-tryonychian is Sinaspideretes from the Late Jurassic of China.[2][3]

Systematics[]

Except for those not assigned to a family, only living genera are listed here.

The eastern mud turtle (Kinosternon subrubrum) is a primitive relative of the true softshells which still has a typical hard turtle shell

References[]

  1. ^ Rhodin 2011, p. 000.204
  2. ^ Ouyang, Hui; Li, Lu; Tong, Haiyan (July 2014). "A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China". Geological Magazine. 151 (4): 600–610. Bibcode:2014GeoM..151..600T. doi:10.1017/S0016756813000575. ISSN 0016-7568. S2CID 128423062.
  3. ^ Evers, Serjoscha W.; Benson, Roger B. J. (January 2019). Smith, Andrew (ed.). "A new phylogenetic hypothesis of turtles with implications for the timing and number of evolutionary transitions to marine lifestyles in the group". Palaeontology. 62 (1): 93–134. doi:10.1111/pala.12384.
  4. ^ One or more basal lineages formerly believed to be a distinct family
Bibliography
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