PBDB Taxon

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

Prothalassoceras

Cephalopoda - Ammonoida - Thalassoceratidae

Taxonomy

Prothalassoceras was named by Böse (1919) [Sepkoski's age data: C Step-u P Guad-u]. Its type is Prothalassoceras welleri.

It was assigned to Goniatitida by Sepkoski (2002); to Thalassoceratinae by Leonova (2002), Furnish et al. (2009); and to Thalassoceratidae by Leonova (1989), Korn (2006), Zhou (2017).

Species

Allothalassoceras bogoslovskayae, Allothalassoceras busterense, Allothalassoceras karpinskyi, Allothalassoceras sangvorense, P. bashkiricum, P. biforme, P. bostocki, P. caddoense, P. dieneri, P. inflatum, P. jaikense, P. kingorum, P. notabile, P. serratum, P. solitum, P. umbilicatum, P. welleri (type species)

Synonyms

Allothalassoceras was named by Leonova (2002). It is not extant. Its type is Prothalassoceras bogoslovskayae.

It was synonymized subjectively with Prothalassoceras by Furnish et al. (2009).

It was assigned to Aristoceratinae by Leonova (2002); and to Thalassoceratidae by Korn (2006).

Synonymy list

Year	Name and author
1919	Prothalassoceras Böse p. 101
1989	Prothalassoceras Leonova p. 115
2002	Allothalassoceras Leonova
2002	Prothalassoceras Leonova
2002	Prothalassoceras Sepkoski
2006	Allothalassoceras Korn
2006	Prothalassoceras Korn
2009	Prothalassoceras Furnish et al. p. 107
2017	Prothalassoceras Zhou p. 84

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Cephalopoda	Cuvier 1797

Rank	Name	Author
subclass	Coleoidea	Bather 1888
order	Ammonoida	(Haeckel 1866)
order	Goniatitida	Hyatt 1884
suborder	Goniatitina	Hyatt 1884
superfamily	Thalassoceratoidea	(Hyatt 1900)
family	Thalassoceratidae	Hyatt 1900
genus	Prothalassoceras

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. †Prothalassoceras Böse 1919

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†Prothalassoceras bashkiricum Ruzhentsev 1950

†Prothalassoceras biforme Gerassimov 1937

†Prothalassoceras bostocki Nassichuk 1971

†Prothalassoceras caddoense Plummer and Scott 1937

†Prothalassoceras dieneri Smith 1927

†Prothalassoceras inflatum Ruzhentsev 1950

†Prothalassoceras jaikense Ruzhentsev 1950

†Prothalassoceras kingorum Miller 1930

†Prothalassoceras notabile Bogoslovskaya et al. 1995

†Prothalassoceras serratum Maximova 1948

†Prothalassoceras solitum Ruzhentsev 1978

†Prothalassoceras umbilicatum Ruzhencev 1952

†Prothalassoceras welleri Böse 1919

Invalid names: Allothalassoceras Leonova 2002 [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	27	13.2	3.00	32.5	14.3	8.89
shell diameter	27	20.8	4.60	55.0	23.0	14.9
shell inflation	27	0.810	0.001	7.80	1.80	1.95

Composition:

aragoniteo

Environment:

marinec

Locomotion:

fast-movingo

Life habit:

nektonico

Diet:

carnivoreo

Vision:

well-developedc

Created:

2005-01-28 02:36:55

Modified:

2005-10-06 16:36:08

Source: o = order, c = class

References: Kiessling 2004, Kiessling 2003

Age range: base of the Kasimovian to the top of the Kungurian or 307.00000 to 272.30000 Ma

Collections (71 total)

Time interval	Ma	Country or state	Original ID and collection number
Kasimovian	307.0 - 303.7	USA (New Mexico)	P. sp. (217024)
Gzhelian	303.7 - 298.9	Russian Federation (Bashkortostan)	P. jaikense (172290)
Gzhelian	303.7 - 298.9	USA (Texas)	P. caddoense (128622) P. kingorum (43455 128583) P. kingorum, P. caddoense (128582)
Gzhelian	303.7 - 298.9	Kazakhstan	P. bashkiricum (81353 172281) P. inflatum (172367) P. inflatum, P. bashkiricum (81354) P. jaikense (81358 172277) P. notabile (81348) P. sp. (81346 81349 81350) P. sp., P. jaikense (81344) P. sp., P. jaikense, P. inflatum (81352) P. sp., P. notabile (81345)
Gzhelian	303.7 - 298.9	Russian Federation	P. bashkiricum (172270 172272 172369) P. inflatum (172288) P. jaikense (172255 172256 172259 172260 172261 172262 172263 172264 172265 172266 172268 172269 172292 172368)
Virgilian	303.7 - 298.9	USA (New Mexico)	P. kingorum (217067)
Virgilian	303.7 - 298.9	USA (Texas)	P. sp. (217891 217932 217986)
Gzhelian - Asselian	303.7 - 295.5	Kazakhstan	P. bashkiricum (172284)
Asselian	298.9 - 295.5	Tajikistan	P. solitum (102491 102492 102494 102495)
Asselian	298.9 - 295.5	USA (Texas)	P. welleri (43474 43481)
Asselian	298.9 - 295.5	Kazakhstan	P. biforme (81369) P. serratum (81361 81362 81364 81367 81368) P. serratum, P. biforme (81366) P. sp., P. serratum (81363)
Asselian - Sakmarian	298.9 - 290.1	China (Guangxi)	P. biforme (185582)
Sakmarian	293.52 - 290.1	Canada (Yukon)	P. bostocki (115744 115745)
Sakmarian	293.52 - 290.1	Kazakhstan	P. biforme (81373)
Sakmarian	293.52 - 290.1	USA (Texas)	P. welleri (105583 131120)
Sakmarian - Artinskian	293.52 - 279.3	East Timor	Thalassoceras dieneri (21163)
Artinskian	290.1 - 279.3	USA (New Mexico)	Thalassoceras welleri (113079 113080)
Artinskian	290.1 - 279.3	USA (Texas)	P. welleri (43568 105720)
Artinskian	290.1 - 279.3	Tajikistan	P. sangvorense (130235)
Artinskian	290.1 - 279.3	Canada (Nunavut)	P. sp. (111866)
Kungurian	279.3 - 272.3	Tajikistan	P. bogoslovskayae (81384 111382)