PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Metaperrinites obsoletus

Cephalopoda - Goniatitida - Perrinitidae

Taxonomy

Shyndoceras obsoletus was named by Leonova (1983). Its type specimen is PIN 3591/122 and is a 3D body fossil.

It was corrected as Shyndoceras obsoletum by Leonova (1989), Leonova (1992) and Leonova (2002); it was recombined as Metaperrinites obsoletus by Zhou and Yang (2005).

Synonymy list

Year	Name and author
1983	Shyndoceras obsoletus Leonova p. 45 fig. 5,6
1989	Shyndoceras obsoletum Leonova p. 135 figs. Pl 9, figs 3,4; text-fig 51c,d, 52
1992	Shyndoceras obsoletum Leonova p. 153 figs. Pl 31, fig 15; pl 32, fig 1
2002	Shyndoceras obsoletum Leonova
2005	Metaperrinites obsoletus Zhou and Yang p. 384 fig. 8.6,8.7,10.1

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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	Ammonoidea	()
order	Goniatitida	Hyatt 1884
suborder	Goniatitina	Hyatt 1884
superfamily	Shumarditoidea	(Plummer and Scott 1937)
family	Perrinitidae
genus	Metaperrinites	Ruzhencev 1950
species	obsoletus	()

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.

†Metaperrinites obsoletus Leonova 1983

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Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	4	16.2	8.30	38.8	13.1	16.4
shell diameter	4	46.4	21.7	83.2	54.5	30.1
shell inflation	4	19.8	-	-	19.8	-

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 2003, Kiessling 2004

Age range: base of the Artinskian to the top of the Kungurian or 290.10000 to 272.30000 Ma

Collections (21 total)

Time interval	Ma	Country or state	Original ID and collection number
Artinskian	290.1 - 279.3	Tajikistan	Shyndoceras obsoletum (130240 130250 130283)
Kungurian	279.3 - 272.3	China (Xinjiang)	Metaperrinites obsoletus (121706)
Kungurian	279.3 - 272.3	Tajikistan	Shyndoceras obsoletum (81384 111288 111289 111376 111377 178024 178026 178027 178152) Shyndoceras obsoletus (111260 111262 111270 111271 111281 111282 111283 111370)