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Eutrephoceras japonicus

Cephalopoda - Nautilida - Nautilidae

Taxonomy
Nautilus japonicus was named by Shimizu (1926) [DISTRIBUTION: Middle-Late Eocene; Japan.]. It is a 3D body fossil. Its type locality is Yamanokami, Hoshuyama-mura, Asakura coal-field, which is in a Rupelian marine sandstone in Japan.

It was recombined as Eutrephoceras japonicum by Kobayashi and Kamada (1959); it was recombined as Cymatoceras japonicum by Matsumoto and Muramoto (1983); it was recombined as Eutrephoceras japonicus by Noda et al. (2001).

Synonymy list
YearName and author
1926Nautilus japonicus Shimizu p. 26 figs. Pl 8, figs 1-6
1959Eutrephoceras japonicum Kobayashi and Kamada p. 105
1983Cymatoceras japonicum Matsumoto and Muramoto p. 90
2001Eutrephoceras japonicus Noda et al. p. 92 fig. 2.1a,b

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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
speciesjaponicus()

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.

†Eutrephoceras japonicus Shimizu 1926
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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 Bartonian to the top of the Rupelian or 41.03000 to 27.30000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Bartonian41.03 - 37.71Japan (Nagasaki) Eutrephoceras japonicum (103018 103019)
Bartonian41.03 - 37.71Japan Eutrephoceras japonicum (81227 81229 81230 81235) Nautilus japonicus (179915)
Priabonian37.71 - 33.9Japan Eutrephoceras japonicus (179914)
Rupelian33.9 - 27.3Japan Nautilus japonicus (179892)