Aethocrinus

<i>Aethocrinus</i>

Aethocrinus

Extinct genus of echinoderms

Aethocrinus is an early-diverging crinoid reported from the Early Ordovician.[1] Its five arms bifurcate.

Quick Facts Scientific classification ...

The contested Echmatocrinus notwithstanding, it is a candidate for the earliest true member of the crinoid class – though not being a member of the crown group, quite where within the stem group to draw the distinction between eocrinoids and crinoids is a somewhat arbitrary decision.


References

  1. [1]
    Philip, G. M.; Strimple, H. L. (1971). "An Interpretation of the Crinoid Aethocrinus moorei Ubaghs". Journal of Paleontology. 45 (3): 491–493. JSTOR 1302696.


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