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Calyptroconus

Helcionelloida - Helcionellida - Helcionellidae

Taxonomy
Calyptroconus was named by Parkhaev (2001) [Parkhaev in Gravestock et al. 2001]. Its type is Calyptroconus radiatus.

It was assigned to Helcionellidae by Parkhaev (2001).

Species
C. radiatus (type species)

Synonymy list
YearName and author
2001Calyptroconus Parkhaev p. 137

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
RankNameAuthor
phylumMollusca
classHelcionelloidaPeel 1991
orderHelcionellida
superfamilyHelcionelloidea(Wenz 1938)
familyHelcionellidae
genusCalyptroconus

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.

G. †Calyptroconus Parkhaev 2001
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†Calyptroconus radiatus Parkhaev 2001
Diagnosis
ReferenceDiagnosis
P. Yu. Parkhaev 2001Shell is cap-shaped, lower conical, slightly longitudinally elongated. Apex is straight, slightly displaced posteriorly from the shell centre. Anterior and posterior shell fields are straight or hardly convex. The aperture is widely elliptical. The aperture margin is simple, without flaring or notches. Anterior shell ornamentation is unknown. Lateral fields of internal moulds bear smoothed radial grooves.