PBDB Taxon

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

Cenoceras (Metacenoceras)

Cephalopoda - Nautilida - Cenoceratidae

Taxonomy

Cenoceras (Metacenoceras) was named by Tinant (1984).

It was assigned to Cenoceras by Tinant (1984) and Tinant (1987).

Subtaxa

Cenoceras (Metacenoceras) dhrumaense, Cenoceras (Metacenoceras) exiguum, Cenoceras (Metacenoceras) lutatii, Cenoceras (Metacenoceras) saoudense

Synonymy list

Year	Name and author
1984	Cenoceras (Metacenoceras) Tinant
1987	Cenoceras (Metacenoceras) Tinant p. 72

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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	Nautilia	(Wade 1988)
order	Nautilida	Agassiz 1847
superfamily	Nautiloidea	(de Blainville 1825)
family	Cenoceratidae	Tinant and Kabamba 1983
genus	Cenoceras	Hyatt 1884
subgenus	Metacenoceras	Tinant 1984

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.

Subg. †Cenoceras (Metacenoceras) Tinant 1984

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†Cenoceras (Metacenoceras) dhrumaense Tinant 1987

†Cenoceras (Metacenoceras) exiguum Crick 1898

†Cenoceras (Metacenoceras) lutatii Gemmellaro 1886

†Cenoceras (Metacenoceras) saoudense Tinant 1987

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	2	15.7	15.5	16.0	15.8	0.354
shell diameter	2	27.5	27.0	28.0	27.5	0.707
shell inflation	2	2.45	2.00	3.00	2.50	0.707

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 Late/Upper Toarcian to the top of the Callovian or 180.10000 to 163.50000 Ma

Collections (9 total)

Time interval	Ma	Country or state	Original ID and collection number
Toarcian	182.7 - 174.1	Saudi Arabia	Metacenoceras sp. (48715)
Late/Upper Toarcian - Aalenian	180.1 - 170.3	Italy	Nautilus lutatii (171174)
Discites	171.6 - 167.7	United Kingdom	Nautilus exiguus (171167)
Bajocian	170.3 - 168.3	Saudi Arabia	Metacenoceras sp. (48085 48112 48136)
Bathonian	168.3 - 166.1	Saudi Arabia	Metacenoceras sp. (48299 48307)
Callovian	166.1 - 163.5	Saudi Arabia	Metacenoceras sp. (48537)