Trionychia

Trionychia is a superfamily of turtles which encompasses the species that are commonly referred to as softshelled turtles as well as some others. They are found throughout the temperate regions of the world. The Jurassic genus Sinaspideretes is considered the earliest representative of the superfamily.[2]

Trionychia
Temporal range: Late Jurassic to recent, 161.2–0 Ma
The spiny softshell turtle a species of the Trionychia superfamily
Scientific classification
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

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
gollark: The actual messaging features are in a different spec to their bizarre XML encapsulation formats.
gollark: Indeed. I think we may be slightly reinventing XMPP, but XMPP is beeoid due to it being overly "extensible".
gollark: - better interserver capability than IRC's weird tree thing
gollark: osmarksdecentralizedchatoid™ featuring:- approximately IRCous design instead of the matrix state synchronisation one - channels belong to a particular server which manages history and permissions and such- global accounts looking somewhat like email addresses. Or maybe they're just public keys and people have to something something web of trust the actual name.- end to end encryption option for small private channels
gollark: Libsodium?

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. doi:10.1017/S0016756813000575. ISSN 0016-7568.
  3. One or more basal lineages formerly believed to be a distinct family
Bibliography
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