PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Gracilisphinctes (Gracilisphinctes)

Cephalopoda - Ammonitida - Perisphinctidae

Taxonomy

Gracilisphinctes (Gracilisphinctes) was named by Buckman (1920).

It was assigned to Gracilisphinctes by Besnosov and Mitta (1993).

Subtaxa

Gracilisphinctes (Gracilisphinctes) densicordatus, Gracilisphinctes (Gracilisphinctes) evolutus, Gracilisphinctes (Gracilisphinctes) kysylalmensis, Gracilisphinctes (Gracilisphinctes) magnificus, Gracilisphinctes (Gracilisphinctes) paragracilis, Gracilisphinctes (Gracilisphinctes) progracilis, Gracilisphinctes (Gracilisphinctes) pseudoimitator, Gracilisphinctes (Gracilisphinctes) suprapalatinus, Gracilisphinctes (Gracilisphinctes) twinhoensis

Species lacking formal opinion data

Gracilisphinctes minimeumbilicatus, Gracilisphinctes subtilicostatus

Synonymy list

Year	Name and author
1920	Gracilisphinctes (Gracilisphinctes) Buckman
1993	Gracilisphinctes (Gracilisphinctes) Besnosov and Mitta p. 137

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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	Perisphinctoidea	(Steinman 1890)
family	Perisphinctidae	Steinmann 1890
genus	Gracilisphinctes
subgenus	Gracilisphinctes	Buckman 1920

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. †Gracilisphinctes (Gracilisphinctes) Buckman 1920

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†Gracilisphinctes (Gracilisphinctes) densicordatus Galacz 1980

†Gracilisphinctes (Gracilisphinctes) evolutus Besnosov 1993

†Gracilisphinctes (Gracilisphinctes) kysylalmensis Besnosov 1993

†Gracilisphinctes (Gracilisphinctes) magnificus Arkell 1958

†Gracilisphinctes (Gracilisphinctes) paragracilis Besnosov 1993

†Gracilisphinctes (Gracilisphinctes) progracilis Cox and Arkell 1950

†Gracilisphinctes (Gracilisphinctes) pseudoimitator Besnosov 1993

†Gracilisphinctes (Gracilisphinctes) suprapalatinus Arkell 1952

†Gracilisphinctes (Gracilisphinctes) twinhoensis Arkell 1957

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 2004, Kiessling 2003

Age range: Middle Bathonian or 168.20000 to 165.30000 Ma

Collections (25 total)

Time interval	Ma	Country or state	Original ID and collection number
Bathonian	168.2 - 165.3	Uzbekistan	Gracilisphinctes pseudoimitator (188440) Gracilisphinctes pseudoimitator, Gracilisphinctes paragracilis (187780 187818) Gracilisphinctes suprapalatinus (188466 188467 188468 188469)
Late/Upper Bathonian	168.2 - 165.3	Uzbekistan	Gracilisphinctes densicordatus (187877 188472) Gracilisphinctes twinhoensis (188461 188462 188463 188464 188465)
Late/Upper Bathonian	168.2 - 165.3	Madagascar (Boeny)	Gracilisphinctes progracilis (234079 234082)
Middle Bathonian	168.2 - 165.3	Germany	Procerites progracilis (59276)
Middle Bathonian	168.2 - 165.3	Uzbekistan	Gracilisphinctes evolutus (188476) Gracilisphinctes kysylalmensis (188477 188478) Gracilisphinctes magnificus (188474 188475) Gracilisphinctes progracilis (188473) Gracilisphinctes pseudoimitator, Gracilisphinctes kysylalmensis (188471)
Middle Bathonian	168.2 - 165.3	France (Basse-Normandie)	Procerites progracilis (28444)