PBDB Taxon

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Yaminuechelys maior

Reptilia - Testudines - Chelidae

Taxonomy

Naiadochelys maior was named by Staesche (1929). Its type specimen is MPEF PV-1273, a partial skeleton (shell fragments), and it is a 3D body fossil. Its type locality is Cerro Hansen, which is in a Danian terrestrial horizon in the Salamanca Formation of Argentina.

It was considered a nomen dubium by Gaffney et al. (2006); it was recombined as Yaminuechelys maior by Bona and de la Fuente (2005), de la Fuente et al. (2014) and Maniel and de la Fuente (2016).

Synonyms

Osteopygis sculptus was named by Staesche (1929). Its type specimen is NMB uncat., a partial shell, and it is a 3D body fossil. Its type locality is Punta Peligro, which is in a Danian mire/swamp claystone/conglomerate in the Salamanca Formation of Argentina.

It was synonymized subjectively with Yaminuechelys maior by Bona and de la Fuente (2005) and Maniel and de la Fuente (2016).

Synonymy list

Year	Name and author
1929	Najadochelys maior Staesche
1929	Osteopygis sculptus Staesche
2005	Yaminuechelys maior Bona and de la Fuente
2014	Yaminuechelys maior de la Fuente et al.
2016	Yaminuechelys maior Maniel and de la Fuente

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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	Pleurodira
family	Chelidae	Gray 1825
genus	Yaminuechelys
species	maior	()

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.

†Yaminuechelys maior Staesche 1929

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Invalid names: Osteopygis sculptus Staesche 1929 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Body part:

carapacef

Adult length:

0.1 to < 1.0f

Grouping:

solitaryf

Environment:

freshwaterf

Locomotion:

actively mobilec

Life habit:

amphibiousf

Diet:

piscivoref

Reproduction:

oviparousf

Created:

2005-08-25 14:20:51

Modified:

2005-08-26 16:30:55

Source: f = family, c = class, subp = subphylum

References: Ernst and Barbour 1989, Carroll 1988, Hendy et al. 2009

Age range: base of the Early/Lower Campanian to the top of the Danian or 83.50000 to 61.60000 Ma

Collections (6 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Campanian - Middle Campanian	83.5 - 70.6	Argentina (Neuquén)	Yaminuechelys maior (117447 132353)
Danian	66.0 - 61.6	Argentina (Río Negro)	Yaminuechelys maior (141238)
Danian	66.0 - 61.6	Argentina (Chubut)	Naiadochelys maior (type locality: 118384) Naiadochelys maior, Osteopygis sculptus (95914) Yaminuechelys maior (208437)