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Spencia
Trilobita - Ptychopariida - Ptychopariidae
Taxonomy
Spencia was named by Resser (1939) [Sepkoski's age data: Cm Tojo-u Cm mMid-l Sepkoski's reference number: 81]. It is not extant. Its type is Spencia typicalis.
It was assigned to Ptychopariida by Sepkoski (2002); and to Ptychopariidae by Jell and Adrain (2003).
It was assigned to Ptychopariida by Sepkoski (2002); and to Ptychopariidae by Jell and Adrain (2003).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1939 | Spencia Resser p. 23 |
| 1939 | Stauroholcus Resser p. 23 |
| 2002 | Spencia Sepkoski, Jr. |
| 2003 | Spencia Jell and Adrain p. 447 |
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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
No diagnoses are available