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Helicaulax

Gastropoda - Aporrhaidae

Taxonomy
Helicaulax was named by Gabb (1868) [Sepkoski's age data: K Apti-u K Maes-u Sepkoski's reference number: 790].

It was reranked as Anchura (Helicaulax) by Saul and Popenoe (1993), Elder and Saul (1996).

It was assigned to Anchura by Saul and Popenoe (1993), Elder and Saul (1996); to Neotaenioglossa by Sepkoski (2002); and to Anchurinae by Kollmann (2009).

Synonymy list
YearName and author
1868Helicaulax Gabb
1993Anchura (Helicaulax) Saul and Popenoe p. 353
1996Anchura (Helicaulax) Elder and Saul p. 394
2002Helicaulax Sepkoski
2009Helicaulax Kollmann p. 55

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classGastropoda
RankNameAuthor
subclassCaenogastropoda(Cox 1959)
—Sorbeoconcha(Ponder and Lindberg 1997)
—Hypsogastropoda(Ponder and Lindberg 1997)
superorderLatrogastropodaRiedel 2000
superfamilyStromboidea(Rafinesque 1815)
familyAporrhaidaeGray 1850
subfamilyAnchurinae
genusHelicaulaxGabb 1868

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. †Helicaulax Gabb 1868
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†Anchura (Helicaulax) popenoei Elder and Saul 1996
†Anchura (Helicaulax) tricosa Saul and Popenoe 1993
†Helicaulax bicarinata Deshayes in Leymerie 1842
†Helicaulax bicarinata Gabb 1869
†Helicaulax falcata Böhm 1891
†Helicaulax formosa Stephenson 1955
†Helicaulax latealata Riedel 1933
Diagnosis
ReferenceDiagnosis
L. R. Saul and W. P. Popenoe 1993Medium-sized, high-spired aporrhaids with whorls ornately sculptured by both axial and spiral elements and usually noded at the intersections; last whorl uniangulate; anterior rostrum elongate, narrow, straight; aperture subquadrate; posterior digitation reflexed, elongate, and adnate to spire at its base; outer lip extended, falcate, tapering posteriorly to a spike; inner lip thin to thick.