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Symmorium
Taxonomy
Symmorium was named by Cope (1893) [Sepkoski's age data: D Fame-u C Mosc-u Sepkoski's reference number: 2,451,898]. Its type is Symmorium reniforme.
It was assigned to Cladodontidae by Hay (1902) and Jordan (1963); to Symmoriida by Sepkoski (2002); and to Symmoriidae by Zangerl (1981), Williams (1985), Goto et al. (1988), Ivanov (1999) and Ginter et al. (2010).
It was assigned to Cladodontidae by Hay (1902) and Jordan (1963); to Symmoriida by Sepkoski (2002); and to Symmoriidae by Zangerl (1981), Williams (1985), Goto et al. (1988), Ivanov (1999) and Ginter et al. (2010).
Species
S. reniforme (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1893 | Symmorium Cope p. 999 |
| 1902 | Symmorium Hay p. 271 |
| 1963 | Symmorium Jordan p. 592 |
| 1981 | Symmorium Zangerl p. 70 |
| 1985 | Symmorium Williams p. 103 |
| 1988 | Symmorium Goto et al. p. 292 |
| 1999 | Symmorium Ivanov p. 273 |
| 2002 | Symmorium Sepkoski |
| 2010 | Symmorium Ginter et al. p. 60 |
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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