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Polyplacus kilmeri
Taxonomy
Polyplacus kilmeri was named by Durham (1967). Its type specimen is UCMP 14767 and is a 3D body fossil. It is the type species of Polyplacus.
Synonymy list
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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.
†Polyplacus kilmeri Durham 1967
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1967 | Test broadly pyriform when retracted, about 50mm tall; pleats produced into regular conical projections every 2.5 to 4 mm near middle of test; individual pleats rise at least 2.5 mm above floor of adjacent valleys near middle of test; individual plates in mosaic range from minute up to 0.8 mm in greatest dimension; some of conical projections of pleats rise nearly 1 mm. | |
| B. C. Wilbur 2006 | As for genus. [Helicoplacoids with interambulacra composed of fused basal plates in the shape of a pentagon, and twice as many distal polygonal plates.] |