Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Helcionopsis

Tergomya - Tryblidiida - Tryblidiidae

Taxonomy
Helcionopsis was named by Ulrich and Scofield (1897) [Sepkoski's age data: Cm lMid O Ashg-m Sepkoski's reference number: 110,615]. It is not extant. Its type is Helcionopsis striata.

It was assigned to Tryblidiidae by Starobogatov (1970) and Runnegar and Jell (1976); to Tryblidiinae by Knight and Yochelson (1960) and Wahlman (1992); and to Tryblidiida by Sepkoski (2002).

Synonymy list
YearName and author
1897Helcionopsis Ulrich and Scofield
1960Helcionopsis Knight and Yochelson p. 79
1970Helcionopsis Starobogatov p. 301
1976Helcionopsis Runnegar and Jell p. 119
1992Helcionopsis Wahlman
2002Helcionopsis Sepkoski, Jr.

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classTergomya
orderTryblidiida()
superfamilyTryblidioidea()
familyTryblidiidae
subfamilyTryblidiinae
genusHelcionopsis

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
No diagnoses are available