Current taxon is already existed. See initial taxon Helicotaphrichnus commensalis
Taxon ID: 16126 | 2018-05-01 / 2019-04-08
Fossil group: Ichnofossils
Belongs to: Polydorichnus
1 Other version of taxon: Helicotaphrichnus commensalis
Taxon description
Ishikawa & Kase, 2007
Diagnosis.⎯Very small hole (usually less than 2 mm) with circular to elliptical outer opening, suggested to be commensal in origin and present only in subapical whorls of gastropod shells. Axis of hole usually slightly oblique to substrate surface (mostly toward clockwise coiling direction of whorl). Boring associated with detrital mud tube, if preserved, in anterior two or three whorls of gastropod, and small abraded area on columella just beneath bore-hole opening.
Synonymy list
2007 Polydorichnus subapicalis new ichnospecis — Ishikawa & Kase , pp. 1469 , fig. 5
Classification
Organism group | Biota |
Ichnofossil group | Ichnofossils |
Bioerosional trace fossils | |
Genus | Polydorichnus |
Species | subapicalis |