PBDB Taxon

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

Eucalycoceras

Cephalopoda - Ammonitida - Acanthoceratidae

Taxonomy

Eucalycoceras was named by Spath (1923) [Sepkoski's age data: K Ceno-m K Ceno-u]. Its type is Ammonites pentagonus.

It was reranked as Calycoceras (Eucalycoceras) by Collignon (1937).

It was assigned to Calycoceras by Collignon (1937); to Acanthoceratidae by Matsumoto (1959) and Cobban (1988); to Ammonoidea by Sepkoski (2002); and to Acanthoceratinae by Kennedy (1994), Wright et al. (1996), Kennedy et al. (1996) and Guendouz et al. (2022).

Species

E. (Proeucalycoceras), E. barcusi, E. collignoni, E. denizoti, E. diabloense, E. gothicum, E. jeanneti, E. pentagonum, E. pervinquierei, E. shastense, E. templetonense

Synonyms

Mantelliceras (Pseudomantelliceras) was named by Thomel (1972).

It was synonymized subjectively with Eucalycoceras by Wright et al. (1996).

It was assigned to Mantelliceras by Thomel (1972).

Synonymy list

Year	Name and author
1923	Eucalycoceras Spath p. 144
1937	Calycoceras (Eucalycoceras) Collignon p. 37
1959	Eucalycoceras Matsumoto p. 94
1972	Mantelliceras (Pseudomantelliceras) Thomel
1988	Eucalycoceras Cobban p. 8
1994	Eucalycoceras Kennedy p. 229
1996	Eucalycoceras Kennedy et al. p. 316
1996	Eucalycoceras Wright et al. p. 164
2002	Eucalycoceras Sepkoski
2022	Eucalycoceras Guendouz et al. p. 2165

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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	Ammonitida
suborder	Ammonitina	Hyatt 1889
superfamily	Acanthoceratoidea	(de Grossouvre 1894)
family	Acanthoceratidae	Grossouvre 1894
subfamily	Acanthoceratinae	de Groussouvre 1894
genus	Eucalycoceras	Spath 1923

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. †Eucalycoceras Spath 1923

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Subg. †Eucalycoceras (Proeucalycoceras) Thomel 1969

†Eucalycoceras barcusi Jones 1938

†Eucalycoceras collignoni Fabre 1940

†Eucalycoceras denizoti Fabre 1940

†Eucalycoceras diabloense Anderson 1958

†Eucalycoceras gothicum Kossmat 1895

†Eucalycoceras jeanneti Collignon 1937

†Eucalycoceras jeanneti nicaensis Thomel 1965

†Eucalycoceras pentagonum Jukes-Browne 1896

†Eucalycoceras pervinquierei Collignon 1931

†Eucalycoceras shastense Reagan 1924

†Eucalycoceras templetonense Cobban 1988

Invalid names: Pseudomantelliceras Thomel 1972 [synonym]

Diagnosis

Reference	Diagnosis
C. W. Wright et al. 1996	High-whorled and rather compressed; at first venter flat and may be bituberculate, but later arched and trituberculate; ribs dense and narrow to flat and distant, with sharp umbilical, inner and outer ventrolateral, and, at least on outer whorls, pointed or bullate siphonal tubercles; tubercles may disappear on body chamber and ribs become flat and steep behind.

Measurements

part	N	mean
shell height	1	44.0
shell diameter	1	93.0
shell inflation	1	28.0

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 2004, Kiessling 2003

Age range: base of the Early/Lower Cenomanian to the top of the Middle Turonian or 99.60000 to 89.30000 Ma

Collections (44 total)

Time interval	Ma	Country or state	Original ID and collection number
Cenomanian	100.5 - 93.9	United Kingdom (England)	E. gothicum (81062)
Cenomanian	100.5 - 93.9	USA (Texas)	Acanthoceras barcusi (6508)
Cenomanian	100.5 - 93.9	France (Normandie)	E. gothicum (230777)
Cenomanian	100.5 - 93.9	France	E. lattensis (230798) E. pentagonum (230800)
Cenomanian	100.5 - 93.9	India	E. pentagonum (217150 217151 217154 217158 217160 217161)
Cenomanian	100.5 - 93.9	Antarctica	E. sp. (83553 83558)
Cenomanian	100.5 - 93.9	Mexico	Acanthoceras barcusi (230856)
Early/Lower Cenomanian	99.6 - 93.5	USA (California)	Calycoceras diabloense (158109)
Late/Upper Cenomanian	99.6 - 93.5	USA (South Dakota)	E. pentagonum (177086)
Late/Upper Cenomanian	99.6 - 93.5	USA (New Mexico)	E. pentagonum (177087) E. sp. (176964) E. templetonense (175721)
Late/Upper Cenomanian	99.6 - 93.5	USA (Arizona)	E. pentagonum (54164 55436 55815 55816)
Late/Upper Cenomanian	99.6 - 93.5	Algeria	E. pentagonum (227880 227881)
Late/Upper Cenomanian	99.6 - 93.5	USA (Colorado)	E. pentagonum (78164 176980)
Late/Upper Cenomanian	99.6 - 93.5	France	E. denizoti (82845) E. gothicum, E. pentagonum (82844) E. lattensis (230895) E. nicaensis (231779 231887) E. pentagonum (4064)
Late/Upper Cenomanian	99.6 - 93.5	USA (Wyoming)	E. templetonense (177088)
Late/Upper Cenomanian	99.6 - 93.5	Spain (Cantabria)	E. jeanneti (231778)
Middle Cenomanian	99.6 - 93.5	France	E. colligoni (82843)
Middle Cenomanian	99.6 - 93.5	Tunisia (Sidi Bou Zid)	E. batnense (217162)
Middle Cenomanian	99.6 - 93.5	USA (Wyoming)	E. templetonense (177090)
Middle Cenomanian - Late/Upper Cenomanian	99.6 - 93.5	USA (Wyoming)	E. templetonense (177089)
Middle Cenomanian - Late/Upper Cenomanian	99.6 - 93.5	Brazil	E. pentagonum (140839)
Middle Cenomanian - Late/Upper Cenomanian	99.6 - 93.5	USA (New Mexico)	E. templetonense (177091 177092 177093)
Middle Turonian	93.5 - 89.3	USA (California)	E. shastense (225675)