PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Parapenascoceras

Cephalopoda - Nautilida - Grypoceratidae

Taxonomy

Parapenascoceras was named by Ruzhentsev and Shimanskiy (1954).

It was assigned to Domatoceratidae by Ruzhentsev and Shimanskiy (1954) and Barskov et al. (2014).

Species

P. aberrans, P. rotundatum, P. sanandreasense

Synonymy list

Year	Name and author
1954	Parapenascoceras Ruzhentsev and Shimanskiy p. 93
2014	Parapenascoceras Barskov et al. p. 1407

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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	Nautiloidea	Agassiz 1847
order	Nautilida	Agassiz 1847
suborder	Tainoceratina	Shimansky 1964
superfamily	Trigonoceratoidea	(Hyatt 1884)
family	Grypoceratidae	Hyatt 1900
subfamily	Domatoceratinae	()
genus	Parapenascoceras

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. †Parapenascoceras Ruzhentsev and Shimanskiy 1954

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†Parapenascoceras aberrans Miller and Unklesbay 1942

†Parapenascoceras rotundatum Miller and Unklesbay 1942

†Parapenascoceras sanandreasense Miller et al. 1933

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	2	52.2	42.0	65.0	53.5	16.3
shell diameter	2	174.8	130.0	235.0	182.5	74.2
shell inflation	2	65.8	51.0	85.0	68.0	24.0

Composition:

aragoniteo

Environment:

marinec

Locomotion:

actively mobileo

Life habit:

nektobenthico

Diet:

carnivoreo

Vision:

well-developedc

Created:

2005-01-28 02:35:00

Modified:

2009-09-27 12:10:42

Source: o = order, c = class

References: Kiessling 2003, Kiessling 2004

Age range: base of the Kungurian to the top of the Roadian or 279.30000 to 268.80000 Ma

Collections (11 total)

Time interval	Ma	Country or state	Original ID and collection number
Kungurian	279.3 - 272.3	USA (New Mexico)	Metacoceras aberrans, Stearoceras rotundatum (83179)
Kungurian	279.3 - 272.3	USA (Texas)	Titanoceras sanandreasense (90740 90745 90747 90749 90750)
Roadian	272.3 - 268.8	USA (New Mexico)	Titanoceras rotundatum, Titanoceras sanandreasense (113092)
Roadian	272.3 - 268.8	USA (Arizona)	Titanoceras rotundatum (113094) Titanoceras rotundatum, Titanoceras sanandreasense (105411 113091 113093)