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Eutrephoceras montanensis

Cephalopoda - Nautilida - Nautilidae

Taxonomy
Eutrephoceras montanensis was named by Kummel (1954). Its type specimen is USNM 158421, a shell, and it is a mold. Its type locality is USGS Mesozoic 19170, Forest Grove, which is in a Callovian marine horizon in the Rierdon Formation of Montana.

Synonymy list
YearName and author
1954Eutrephoceras montanensis Kummel p. 320 figs. Pl 34, figs 1,2
1956Eutrephoceras montanensis Kummel p. 382

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassNautilia(Wade 1988)
orderNautilidaAgassiz 1847
superfamilyNautiloidea(de Blainville 1825)
familyNautilidaede Blainville 1825
genusEutrephoceras
speciesmontanensis

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 height1125.0
shell diameter1203.0
shell inflation17.00

Composition: aragoniteo
Environment: marinec
Locomotion: actively mobilef
Life habit: nektonicf
Diet: carnivoref
Vision: well-developedc
Created: 2009-09-27 10:10:59
Modified: 2009-09-27 12:10:59
Source: f = family, o = order, c = class
References: Hendy et al. 2009, Kiessling 2004, Kiessling 2003

Age range: base of the Early/Lower Callovian to the top of the Late/Upper Campanian or 165.30000 to 72.20000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Callovian165.3 - 161.5USA (Montana) Eutrephoceras montanensis (type locality: 180713 180714 180715 180716 180717 180718 180719)
Late/Upper Campanian83.6 - 72.2USA (Montana) Eutrephoceras montanensis (213001 213077 213084)