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Psammechinus
Taxonomy
Psammechinus was named as a genus. It is extant.
It was reranked as Echinus (Psammechinus) by Agassiz and Desor (1867).
It was assigned to Echinus by Agassiz and Desor (1867); to Triplechinidae by Clark and Twitchell (1915); to Echinidae by Cooke (1941), Fell and Pawson (1966) and Kier (1997); and to Echinoida by Sepkoski (2002).
It was reranked as Echinus (Psammechinus) by Agassiz and Desor (1867).
It was assigned to Echinus by Agassiz and Desor (1867); to Triplechinidae by Clark and Twitchell (1915); to Echinidae by Cooke (1941), Fell and Pawson (1966) and Kier (1997); and to Echinoida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1867 | Echinus (Psammechinus) Agassiz and Desor |
| 1915 | Psammechinus Clark and Twitchell p. 63 |
| 1941 | Psammechinus Cooke p. 15 |
| 1966 | Psammechinus Fell and Pawson p. U433 |
| 1997 | Psammechinus Kier p. 5 |
| 2002 | Psammechinus 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.
G. Psammechinus
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†Psammechinus carolinensis Kier 1997
Psammechinus cingulatus Clark 1891
†Psammechinus dubius Agassiz 1840
†Psammechinus exoletus McCrady 1857
†Psammechinus floralanus Cooke 1941
†Psammechinus ocalanus Cooke 1941
†Psammechinus philanthropus Conrad 1843
†Psammechinus santee Cooke 1941
Diagnosis
No diagnoses are available