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Dasometopus
Taxonomy
Dasometopus was named by Resser (1936) [Sepkoski's age data: Cm uMid-l Cm uMid-u Sepkoski's reference number: 80]. Its type is Harpides breviceps.
It was assigned to Conocoryphidae by Resser (1936); to Ptychopariida by Sepkoski (2002); and to Holocephalinidae by Jell and Adrain (2002).
It was assigned to Conocoryphidae by Resser (1936); to Ptychopariida by Sepkoski (2002); and to Holocephalinidae by Jell and Adrain (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Dasometopus Resser p. 21 |
| 2002 | Dasometopus Jell and Adrain p. 364 |
| 2002 | Dasometopus Sepkoski |
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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
| Reference | Diagnosis | |
|---|---|---|
| C. E. Resser 1936 | Cephalon alone known. Cephalon semicircular, eye- less. Glabella well defined, tapered, a little more than half the length of the head. Glabellar furrows present, the rear pair recurved, sepa- rating marginal lobes. Cheeks marked by irregular lines radiating from the dorsal furrow. Upturned rim with coarse granules ; other scattered granules on cheeks. A depression extends across the pre- glabellar area. |