PBDB Taxon

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Seymourites

Cephalopoda - Ammonitida - Kosmoceratidae

Taxonomy

Seymourites was named as a genus. It is not extant.

It was reranked as Kepplerites (Seymourites) by Imlay (1953).

It was assigned to Kepplerites by Imlay (1953); to Kosmoceratidae by Arkell et al. (1957); and to Ammonoidea by Sepkoski (2002).

Species

Kepplerites (Seymourites) abruptus, Kepplerites (Seymourites) alticostatus, Kepplerites (Seymourites) gitinsi, Kepplerites (Seymourites) ingrahami, Kepplerites (Seymourites) mcevoyi, Kepplerites (Seymourites) multus, Kepplerites (Seymourites) plenus, Kepplerites (Seymourites) tychonis

Species lacking formal opinion data

Kepplerites gittinsi

Synonymy list

Year	Name and author
1953	Kepplerites (Seymourites) Imlay p. 95
1957	Seymourites Arkell et al. p. 298
2002	Seymourites Sepkoski

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

Rank	Name	Author
class	Cephalopoda	Cuvier 1797
subclass	Ammonoidea	()
order	Ammonitida	Haeckel 1866
suborder	Ammonitina	Hyatt 1889
superfamily	Perisphinctoidea	(Steinman 1890)
family	Kosmoceratidae	Haug 1887
genus	Seymourites

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. †Seymourites

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†Kepplerites (Seymourites) abruptus McLearn 1929

†Kepplerites (Seymourites) alticostatus Imlay 1953

†Kepplerites (Seymourites) gitinsi McLearn 1927

†Kepplerites (Seymourites) ingrahami McLearn 1929

†Kepplerites (Seymourites) mcevoyi McLearn 1928

†Kepplerites (Seymourites) multus McLearn 1929

†Kepplerites (Seymourites) plenus McLearn 1927

†Kepplerites (Seymourites) tychonis Ravn 1911

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	8	39.5	32.0	51.0	38.5	7.03
shell diameter	8	97.2	75.0	131.0	99.5	18.9
shell inflation	8	25.2	11.5	39.0	29.0	9.68

Composition:

aragoniteo

Environment:

marinec

Locomotion:

fast-movingo

Life habit:

nektonico

Diet:

carnivoreo

Vision:

well-developedc

Created:

2005-01-28 02:27:03

Modified:

2009-10-08 14:14:55

Source: o = order, c = class

References: Kiessling 2003, Kiessling 2004

Age range: base of the Bathonian to the top of the Callovian or 168.20000 to 161.50000 Ma

Collections (16 total)

Time interval	Ma	Country or state	Original ID and collection number
Bathonian	168.2 - 165.3	Canada (British Columbia)	Kepplerites tychonis (37609)
Callovian	165.3 - 161.5	USA (Alaska)	Kepplerites abruptus (158992 158993) Kepplerites alticostatus (158655) Kepplerites alticostatus, Kepplerites abruptus (158907) Kepplerites alticostatus, Kepplerites ingrahami (158905) Kepplerites gittinsi (158920) Kepplerites ingrahami (158654) Kepplerites ingrahami, Kepplerites plenus (158954) Kepplerites mcevoyi (158919) Kepplerites multus, Kepplerites ingrahami, Kepplerites mcevoyi (158915) Kepplerites tychonis (68896 158649 158902)
Callovian	165.3 - 161.5	Svalbard and Jan Mayen	Kepplerites tychonis (212943 212974)