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Stelckaspis perplexa
Taxonomy
Dionide perplexa was named by Billings (1866). Its type specimen is GSC 2559, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is AN12, which is in a Telychian open shallow subtidal shale/limestone in the Jupiter Formation of Canada.
It was recombined as Proetus perplexus by Twenhofel (1928); it was recombined as Stelckaspis perplexa by Chatterton and Ludvigsen (2004).
It was recombined as Proetus perplexus by Twenhofel (1928); it was recombined as Stelckaspis perplexa by Chatterton and Ludvigsen (2004).
Synonymy list
| Year | Name and author |
|---|---|
| 1866 | Dionide perplexa Billings p. 67 |
| 1928 | Proetus perplexus Twenhofel p. 325 |
| 2004 | Stelckaspis perplexa Chatterton and Ludvigsen p. 35 |
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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.
†Stelckaspis perplexa Billings 1866
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Diagnosis
No diagnoses are available