PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Prionocyclus

Cephalopoda - Ammonitida - Collignoniceratidae

Taxonomy

Prionocyclus was named by Meek (1876) [Sepkoski's age data: K Turo-u].

It was assigned to Collignoniceratidae by Kennedy and Cobban (1988); to Collignoniceratinae by Kennedy et al. (2001); and to Ammonoidea by Sepkoski (2002).

Species

P. albinus, P. bosquensis, P. branneri, P. californicus, P. germari (syn. Ammonites schloenbachi), P. hyatti (syn. Prionotropis eaglensis), P. macombi, P. novimexicanus (syn. P. wyomingensis elegans), P. pluricostatus, P. quadratus, P. wyomingensis (syn. Ammonites serratocarinatus)

Species lacking formal opinion data

P. cobbani, P. percarinatus

Synonyms

Germariceras was named by Breistroffer (1947) [Sepkoski's age data: K Turo-u].

It was synonymized subjectively with Prionocyclus by Kennedy et al. (2001).

It was assigned to Collignoniceratinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).

Synonymy list

Year	Name and author
1876	Prionocyclus Meek
1947	Germariceras Breistroffer
1988	Prionocyclus Kennedy and Cobban p. 606
1996	Germariceras Wright et al. p. 186
2001	Prionocyclus Kennedy et al. p. 81
2002	Germariceras Sepkoski
2002	Prionocyclus Sepkoski

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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	Haeckel 1866
suborder	Ammonitina	Hyatt 1889
superfamily	Acanthoceratoidea	(de Grossouvre 1894)
family	Collignoniceratidae	Wright and Wright 1951
subfamily	Collignoniceratinae	Wright and Wright 1951
genus	Prionocyclus	Meek 1876

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. †Prionocyclus Meek 1876

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†Prionocyclus albinus Fritsch 1872

†Prionocyclus bosquensis Kennedy 1988

†Prionocyclus branneri Anderson 1902

†Prionocyclus californicus Anderson 1958

†Prionocyclus germari Reuss 1845

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Invalid names: Ammonites schloenbachi Fritsch 1893 [synonym]

†Prionocyclus hyatti Stanton 1894

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Invalid names: Prionotropis eaglensis Adkins 1928 [synonym]

†Prionocyclus macombi Meek 1876

†Prionocyclus novimexicanus Marcou 1858

†Prionocyclus pluricostatus Kennedy et al. 2001

†Prionocyclus quadratus Cobban 1953

†Prionocyclus wyomingensis Meek 1876

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Invalid names: Ammonites serratocarinatus Meek 1870 [replaced]

Invalid names: Germariceras Breistroffer 1947 [synonym], Prionocyclus wyomingensis elegans Haas 1946 [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	4	15.4	7.67	29.8	15.8	9.31
shell diameter	4	36.8	20.6	72.8	35.5	22.9
shell inflation	4	11.6	5.96	24.9	12.1	8.87

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 Middle Turonian to the top of the Coniacian or 93.90000 to 85.70000 Ma

Collections (77 total)

Time interval	Ma	Country or state	Original ID and collection number
Late/Upper Turonian	93.9 - 89.8	Nigeria	P. sp. (83014)
Late/Upper Turonian	93.9 - 89.8	Japan (Hokkaido)	P. cobbani (94685)
Late/Upper Turonian	93.9 - 89.8	USA (Wyoming)	P. novimexicanus (88384 88385 88419 88420) P. sp. (87753 87755)
Late/Upper Turonian	93.9 - 89.8	USA (South Dakota)	P. novimexicanus (88377 88378 88379 88388)
Late/Upper Turonian	93.9 - 89.8	USA (New Mexico)	P. germari (88424 88425 88426 88427 88428) P. macombi (229812) P. novimexicanus (171822 171823 171824 171828 171832 171848 171849) P. quadratus (87845)
Late/Upper Turonian	93.9 - 89.8	USA (Minnesota)	P. novimexicanus (88030 88031)
Late/Upper Turonian	93.9 - 89.8	Brazil (Sergipe)	P. germari (143707 143718 143719 143738 143749 143751 143753)
Middle Turonian	93.9 - 89.8	USA (New Mexico)	P. hyatti (4870 88639 88640 88641 171835 171836 171837 171838 178776) P. macombi (88793 88794 171843 171844 171845 178800) P. wyomingensis (77804 171846 178828)
Middle Turonian	93.9 - 89.8	Canada (British Columbia)	P. macombi (73479) Prionotropis hyatti (87444)
Middle Turonian	93.9 - 89.8	USA (Arizona)	P. hyatti (56073) P. percarinatus (53504)
Middle Turonian	93.9 - 89.8	France	P. hyatti (184518 184519 184520)
Middle Turonian	93.9 - 89.8	USA (Texas)	P. hyatti (88429 178811) P. hyatti, P. albinus (88430) Prionotropis hyatti, P. macombi, P. wyomingensis (88540)
Middle Turonian	93.9 - 89.8	Angola	P. novimexicanus (210902)
Middle Turonian	93.9 - 89.8	USA (South Dakota)	P. macombi (88381)
Middle Turonian	93.9 - 89.8	Mexico (Chihuahua)	P. hyatti (38966 38968 38970)
Middle Turonian	93.9 - 89.8	USA (Kansas)	P. hyatti (88418)
Middle Turonian - Late/Upper Turonian	93.9 - 89.8	USA (Wyoming)	P. hyatti, P. germari (88421)
Turonian	93.9 - 89.8	USA (Colorado)	P. sp. (179209)
Turonian	93.9 - 89.8	USA (Wyoming)	P. sp. (87754)
Turonian	93.9 - 89.8	USA (New Mexico)	P. quadratus (82222) P. sp. (82221 82224)
Coniacian	89.8 - 85.7	USA (California)	P. californicus (86783)