PBDB Taxon

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

Polyptychoceras (Polyptychoceras)

Cephalopoda - Ammonitida - Diplomoceratidae

Taxonomy

Polyptychoceras (Polyptychoceras) was named by Yabe (1927).

It was assigned to Polyptychoceras by Kennedy and Summesberger (1999).

Subtaxa

Polyptychoceras (Polyptychoceras) obliquecostatum (syn. Hamites berkelis), Polyptychoceras (Polyptychoceras) obstrictum

Species lacking formal opinion data

Polyptychoceras haradanum, Polyptychoceras jimboi, Polyptychoceras mihoense, Polyptychoceras obatai, Polyptychoceras psudogaultinum, Polyptychoceras subquadratum, Polyptychoceras subunduratum, Polyptychoceras yubarense

Synonymy list

Year	Name and author
1927	Polyptychoceras (Polyptychoceras) Yabe
1999	Polyptychoceras (Polyptychoceras) Kennedy and Summesberger p. 29

Is something missing? Join the Paleobiology Database and enter the data

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	Ammonitida	Haeckel 1866
suborder	Ancyloceratina	Wiedmann 1966
superfamily	Turrilitoidea	(Gill 1871)
family	Diplomoceratidae	Spath 1926
subfamily	Polyptychoceratinae	Matsumoto 1938
genus	Polyptychoceras	Yabe 1927
subgenus	Polyptychoceras	Yabe 1927

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. †Polyptychoceras (Polyptychoceras) Yabe 1927

show all | hide all

†Polyptychoceras (Polyptychoceras) obliquecostatum Schluter 1872

hide

Invalid names: Hamites berkelis Schluter 1876 [synonym]

†Polyptychoceras (Polyptychoceras) obstrictum Jimbo 1894

Diagnosis

No diagnoses are available

Measurements

No measurements are available

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 Santonian to the top of the Maastrichtian or 85.70000 to 66.00000 Ma

Collections (17 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Santonian	85.7 - 83.6	Japan (Hokkaido)	Polyptychoceras obstrictum (94682)
Santonian	85.7 - 83.6	Argentina	Polyptychoceras sp. (66644)
Santonian	85.7 - 83.6	Antarctica	Polyptychoceras obstrictum (83371 83372 83373)
Santonian	85.7 - 83.6	Japan	Polyptychoceras sp. (62214 62215 62216 62217)
Santonian	85.7 - 83.6	USA (California)	Polyptychoceras obstrictum (86954)
Campanian	83.6 - 72.2	Japan	Polyptychoceras obatai (62236) Polyptychoceras sp. (62232 62233 62237 62239)
Late/Upper Campanian	83.6 - 72.2	Austria	Polyptychoceras obliquecostatum (48008)
Maastrichtian	72.2 - 66.0	Russian Federation (Sakhalin)	Diplomoceras obstrictum (64608)