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Semadiscus
Taxonomy
Semadiscus was named by Romanenko (1978) [In: Repina & Romanenko (1978). Sepkoski's age data: Cm Boto-l]. It is not extant. Its type is Semadiscus sollennis.
It was assigned to Agnostida by Sepkoski (2002); and to Weymouthiidae by Jell and Adrain (2002).
It was assigned to Agnostida by Sepkoski (2002); and to Weymouthiidae by Jell and Adrain (2002).
Species
S. sollennis (type species)
Synonymy list
Year | Name and author |
---|---|
1978 | Semadiscus Romanenko |
2002 | Semadiscus Jell and Adrain p. 443 |
2002 | Semadiscus 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
No diagnoses are available