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Epistroboceras lesliense

Cephalopoda - Nautilida - Trigonoceratidae

Taxonomy
Epistroboceras lesliense was named by Niko and Mapes (2007). Its type specimen is OUZC 5225, a shell, and it is not a trace fossil. Its type locality is Loc. 1. USGS 14369. Road cut on se side US 65, 0.8 km sw of Peyton Creek Bridge, which is in a Serpukhovian offshore grainstone/shale in the Imo Formation of Arkansas.

Synonymy list
YearName and author
2007Epistroboceras lesliense Niko and Mapes pp. 295 – 297 figs. 3, 4.1–4.9, 4.12, 4.13

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classCephalopodaCuvier 1797
subclassNautiloideaAgassiz 1847
orderNautilidaAgassiz 1847
superfamilyTrigonoceratoidea(Hyatt 1884)
familyTrigonoceratidae
genusEpistrobocerasTurner 1954
specieslesliense

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.

Diagnosis
ReferenceDiagnosis
S. Niko and R. H. Mapes 2007Species of Epistroboceras with width/height ratios of 0.70–0.80 and umbilical angle strongly shifted to dorsum in adoral whorl; ratios of umbilical zone height to whorl height are small, 0.13–0.17; ventral platform wide; ventral (hyponomic) sinus V-shaped; siphuncle subventral with small position ratios (see the description for definition) of 0.13–0.15.