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Orthoconus

Tergomya - Kiringellida - Hypseloconidae

Taxonomy
Orthoconus was named by Stinchcomb (1986) [Sepkoski's age data: Cm Trep-u Sepkoski's reference number: 644]. It is not extant.

It was assigned to Hypseloconidae by Stinchcomb (1986); and to Mollusca by Sepkoski (2002).

Synonymy list
YearName and author
1986Orthoconus Stinchcomb
2002Orthoconus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
RankNameAuthor
phylumMollusca
classTergomya
orderKiringellida()
familyHypseloconidae
genusOrthoconus

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
B. L. Stinchcomb 1986Shell an elongate elliptical cone, gradually expanding to form a cone at least five times larger than greatest length at aperture. Shell aperture an ellipse with the length and height subequal. Apex in most species extending to a well formed point. Surfac ewith simple radiating striae, running from the apex to the margin; interspaces wider than the striae. Muscle scars unknown.