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Parasaynoceras mexicanum

Cephalopoda - Ammonitida - Holcodiscidae

Taxonomy
Saynoceras mexicanum was named by Imlay (1940). Its type specimen is UMMP 17715, a shell, and it is a 3D body fossil.

It was recombined as Parasaynoceras mexicanum by Klein (2005).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1940Saynoceras mexicanum Imlay p. 161 figs. pl. 21, figs. 1-4
2005Parasaynoceras mexicanum Klein p. 132

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyPerisphinctaceaeSteinman 1890
familyHolcodiscidaeSpath 1924
genusParasaynocerasBreistroffer 1947
speciesmexicanum()

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.

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Diagnosis
No diagnoses are available
Measurements
partNmean
shell height19.00
shell diameter118.5
shell inflation13.50

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: Barremian or 125.77000 to 121.40000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Barremian125.77 - 121.4Mexico (Coahuila) Saynoceras mexicanum (2162)