PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Shachemydinae

Reptilia - Testudines - Adocidae

Taxonomy

Shachemydinae was named by Khosatzky (1977) [in Nessov & Khozatzkii 1977].

It was assigned to Adocidae by Nessov (1984), de Lapparent de Broin (2004), Syromyatnikova (2011) and Tong et al. (2019).

Subtaxa

Mlynarskiella, Mlynarskiella mariani, Protoshachemys

Synonyms

Mlynarskiella was named by Shuvalov and Chkhikvadze (1986).

It was considered a nomen dubium by Danilov et al. (2011).

It was assigned to Adocidae by Sukhanov (2000).
Mlynarskiella mariani was named by Shuvalov and Ckhikvadze (1986). It is a 3D body fossil. Its type locality is Ongon Ulan Ula, which is in a Cenomanian/Turonian terrestrial horizon in the Baishire Formation of Mongolia.

It was considered a nomen dubium by Danilov et al. (2011).

Synonymy list

Year	Name and author
1977	Shachemydinae Khosatzky
1984	Shachemydinae Nessov p. 216
1986	Mlynarskiella Shuvalov and Chkhikvadze
1986	Mlynarskiella mariani Shuvalov and Ckhikvadze
2000	Mlynarskiella Sukhanov p. 333
2004	Shachemydinae de Lapparent de Broin p. 392
2011	Shachemydinae Syromyatnikova
2019	Shachemydinae Tong et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha

Rank	Name	Author
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
—	Testudinata	(Oppel 1811)
order	Testudines	Batsch 1788
suborder	Cryptodira
superfamily	Trionychoidea	Fitzinger 1826
family	Adocidae
subfamily	Shachemydinae	Khosatzky 1977
subfamily	Shachemydinae	Khosatzky 1977

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.

Subfm. †Shachemydinae Khosatzky 1977

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G. †Protoshachemys Tong et al. 2019

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†Protoshachemys rubra Tong et al. 2019

Invalid names: Mlynarskiella Shuvalov and Chkhikvadze 1986 [nomen dubium], Mlynarskiella mariani Shuvalov and Ckhikvadze 1986 [nomen dubium]

Diagnosis

Reference	Diagnosis
F. de Lapparent de Broin 2004	The Shachemydinae differ from the species of the node C, Adocinae, in: - the more ﬂattened shell; - the ventral border of the marginals progressively more narrowed toward the nuchal; - the posterior border of the intergulars truncated just in front of the entoplastron which is anteriorly shortened.

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

freshwatersubo

Locomotion:

actively mobilec

Life habit:

aquaticsubo

Diet:

omnivoresubo

Reproduction:

oviparoussubo

Created:

2005-08-26 14:49:00

Modified:

2005-08-26 16:49:00

Source: subo = suborder, c = class, subp = subphylum

References: Uetz 2005, Carroll 1988, Hendy et al. 2009

Age range: base of the Late/Upper Barremian to the top of the Late/Upper Turonian or 130.00000 to 89.30000 Ma

Collections (3 total)

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Barremian	130.0 - 125.45	Thailand (Changwat)	Protoshachemys sp., Protoshachemys rubra (201767)
Cenomanian - Early/Lower Turonian	100.5 - 89.3	Mongolia (Bayankhongor)	Mlynarskiella mariani (154410)
Middle Turonian - Late/Upper Turonian	93.5 - 89.3	Uzbekistan (Navoi)	S. sp. (46959)