PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Protosteginae

Reptilia - Testudines - Protostegidae

Taxonomy

Protosteginae was named by Wieland.

It was assigned to Protostegidae by Zangerl (1953), Kuhn (1966), Weems (1988).

Subtaxa

Calcarichelys, Microstega

Synonymy list

Year	Name and author
1953	Protosteginae Zangerl p. 72
1966	Protosteginae Kuhn p. 28
1988	Protosteginae Weems p. 141 figs. Table 2

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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	Chelonioidea
family	Protostegidae	Cope 1873
subfamily	Protosteginae	Wieland
subfamily	Protosteginae	Wieland

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. †Protosteginae Wieland

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G. †Calcarichelys Zangerl 1953

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†Calcarichelys gemma Zangerl 1953

G. †Microstega Hooks 1998

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†Microstega copei Wieland 1909

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

marinesuperf

Locomotion:

actively mobilec

Life habit:

aquaticsubo

Diet:

omnivoresubo

Reproduction:

oviparoussubo

Created:

2017-04-17 10:37:12

Modified:

2017-04-17 10:37:12

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

References: Bush and Bambach 2015, Uetz 2005, Carroll 1988, Hendy et al. 2009

Age range: base of the Santonian to the top of the Early/Lower Maastrichtian or 85.70000 to 66.00000 Ma

Collections (4 total)

Time interval	Ma	Country or state	Original ID and collection number
Santonian	85.7 - 83.6	USA (Kansas)	Protostega copei (167919)
Late/Upper Santonian - Early/Lower Campanian	85.7 - 72.2	USA (Alabama)	Calcarichelys gemma (81935)
Early/Lower Campanian	83.6 - 72.2	USA (Alabama)	Calcarichelys gemma (82635)
Early/Lower Maastrichtian	72.2 - 66.0	Angola (Namibe)	Calcarichelys sp. (106705)