PBDB Taxon

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

Saniwa

Reptilia

Taxonomy

Saniwa was named by Leidy (1870). It is not extant. Its type is Saniwa ensidens. It is the type genus of Saniwinae.

It was assigned to Lacertilia by Leidy (1873); to Anguidae by Hay (1902); to Megalaninae by Nopcsa (1928); to Varanidae by Hecht (1959), Estes (1983), Carroll (1988), Alifanov (1993), Clos (1995) and Smith (2006); and to Saniwinae by Hay (1930), McDowell and Bogert (1954), Brattstrom (1955), Stritzke (1983) and Rieppel and Grande (2007).

Species

S. edura, S. ensidens (syn. Thinosaurus grandis, S. major, Thinosaurus paucidens, Thinosaurus agilis, Thinosaurus leptodus, S. brooksi, Thinosaurus crassus) (type species), S. orsmaelensis

Synonyms

Thinosaurus was named by Marsh (1872). Its type is Tinosaurus stenodon.

It was misspelled as Tinosaurus by Estes (1983); it was synonymized subjectively with Saniwa by Gilmore (1922), Hay (1930), Gilmore (1943), Hecht (1959), Carroll (1988), Rieppel and Grande (2007) and Smith et al. (2018).

It was assigned to Lacertilia by Cope (1873); to Varanidae by Zittel (1890), Hoffmann (1890), Boulenger (1891) and Hay (1902); and to Agamidae by Estes (1983).

Synonymy list

Year	Name and author
1870	Saniwa Leidy p. 124
1872	Thinosaurus Marsh p. 299
1873	Thinosaurus Cope p. 632
1873	Saniva Leidy p. 181–182
1890	Thinosaurus Hoffmann
1890	Thinosaurus Zittel
1891	Thinosaurus Boulenger
1902	Saniwa Hay p. 475
1902	Thinosaurus Hay p. 476
1928	Saniva Nopcsa p. 177
1930	Saniwa Hay p. 251
1954	Saniwa McDowell and Bogert p. 132
1955	Saniwa Brattstrom p. 145
1959	Saniwa Hecht p. 135
1983	Saniwa Estes
1983	Tinosaurus Estes
1983	Saniwa Stritzke
1988	Saniwa Carroll
1993	Saniwa Alifanov p. 10
1995	Saniwa Clos p. 263
2006	Saniwa Smith p. 6
2007	Saniwa Rieppel and Grande p. 644

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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
—	Squamata	()
—	Anguimorpha	(Fürbringer 1900)
—	Anguiformes	(Bonaparte 1831)
infraorder	Platynota	Baur 1890
superfamily	Varanoidea	Gray 1827
subfamily	Saniwinae	Camp 1923
genus	Saniwa

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.

G. †Saniwa Leidy 1870

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†Saniwa edura Smith 2006

†Saniwa ensidens Leidy 1870

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Invalid names: Saniwa brooksi Brattstrom 1955 [synonym], Saniwa major Leidy 1873 [synonym], Thinosaurus agilis Marsh 1872 [synonym], Thinosaurus crassus Marsh 1872 [synonym], Thinosaurus grandis Marsh 1872 [synonym], Thinosaurus leptodus Marsh 1872 [synonym], Thinosaurus paucidens Marsh 1872 [synonym]

†Saniwa orsmaelensis Dollo 1923

Invalid names: Thinosaurus Marsh 1872 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialg

Locomotion:

actively mobilec

Diet:

carnivoreg

Reproduction:

oviparoussuperf

Created:

2005-09-16 14:07:29

Modified:

2005-09-16 16:07:29

Source: g = genus, superf = superfamily, c = class, subp = subphylum

References: Gilmore 1928, Carroll 1988, Hendy et al. 2009, Pianka and Vitt 2003

Age range: base of the Torrejonian to the top of the Orellan or 63.80000 to 33.30000 Ma

Collections (64 total)

Time interval	Ma	Country or state	Original ID and collection number
Torrejonian	63.8 - 60.9	USA (Wyoming)	S. sp., Palaeosaniwa canadensis (14886)
Ypresian	56.0 - 47.8	Belgium (Brabant)	S. orsmaelensis (35531)
Ypresian	56.0 - 47.8	France (Marne)	Saniwa indet. (35540) S. orsmaelensis (35533)
Ypresian	56.0 - 47.8	Kyrgyzstan (Osh)	S. sp. (28490)
Ypresian	56.0 - 47.8	France (Oise)	S. orsmaelensis (68174)
Ypresian	56.0 - 47.8	France (Champagne-Ardenne)	Saniwa indet. (73387)
Lysitean - Lostcabinian	55.8 - 50.3	USA (Wyoming)	S. sp. A (15451)
Wasatchian	55.8 - 50.3	Mexico (Baja California)	S. sp. (15671)
Wasatchian	55.8 - 50.3	USA (New Mexico)	S. ensidens (186899 186901) S. sp. (15453 186898 186902 186903 186904 186905)
Wasatchian	55.8 - 50.3	USA (North Dakota)	S. ensidens (15895)
Wasatchian	55.8 - 50.3	USA (Wyoming)	S. ensidens (15853 85026 179977) S. sp. (15534 15904 15908 15910) S. sp. B (181313) S. sp. CG-1, S. sp. CG-2 (15458)
MP 8 + 9	55.8 - 48.6	France (Nord-Pas-de-Calais-Picardie)	Saniwa indet. (179143)
MP 8 + 9	55.8 - 48.6	France (Picardie)	S. sp., S. orsmaelensis (84997)
Bridgerian	50.3 - 46.2	USA (Colorado)	S. sp. (179980)
Bridgerian	50.3 - 46.2	USA (Utah)	S. sp. (16396)
Bridgerian	50.3 - 46.2	USA (Wyoming)	S. crassa (16211 16234 16278) S. ensidens (15837 16136 16210 27269 99835) S. grandis (16431) S. major (106325) S. sp. (16296) S. sp., Thinosaurus stenodon (16244) Thinosaurus paucidens, Thinosaurus leptodus, Thinosaurus grandis (16228) Thinosaurus stenodon (16433)
Middle Eocene	47.8 - 37.71	USA (Wyoming)	S. paucidens (118469) Thinosaurus crassus, Thinosaurus agilis (81455)
Early/Lower Uintan	46.2 - 39.7	USA (Colorado)	S. sp. (16623)
Early/Lower Uintan	46.2 - 39.7	USA (California)	S. brooksi (16665 16702 16705 16706)
Early/Lower Uintan	46.2 - 39.7	USA (Utah)	S. crassa (179979)
Uintan	46.2 - 39.7	USA (California)	S. brooksi (16786 16791)
Uintan	46.2 - 39.7	USA (Utah)	S. crassa (16606) S. ensidens (16654) S. sp. (222799) Thinosaurus paucidens (179978)
Bartonian	41.3 - 38.0	France (Languedoc-Roussillon Region)	Saniwa indet. (31736)
Priabonian	38.0 - 33.9	France (Quercy, Midi-Pyrenees Region)	Saniwa indet. (12854)
Chadronian	37.2 - 33.9	USA (North Dakota)	S. edura (16991)
Late/Upper Eocene - Early/Lower Miocene	37.2 - 15.97	France (Languedoc-Roussillon-Midi-Pyrénées)	S. sp. (179194)
Orellan	33.9 - 33.3	USA (Nebraska)	Saniwa indet. (179967)