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Pachycephalocrinus jaanussoni
Taxonomy
Pachycephalocrinus jaanussoni was named by Cole and Toom (2019). Its type specimen is GIT 653- 1, a calyx, and it is a 3D body fossil. It is the type species of Pachycephalocrinus.
Synonymy list
| Year | Name and author |
|---|---|
| 2019 | Pachycephalocrinus jaanussoni Cole and Toom pp. 603 - 604 figs. 2F–J, 3B |
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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.
†Pachycephalocrinus jaanussoni Cole and Toom 2019
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. R. Cole and U. Toom 2019 | Glyptocrinoid with globose calyx; lobate arm bases; fixed brachials bifurcating once or twice within calyx, often asymmetrically within rays; fixed pinnules up to six or more per ray; relatively few (<10) interradial plates; interray plating 1-2, forming a biseries proximally; fixed intrabrachials present within half rays, occasionally within quarter rays; tegmen high, domed; posterior inter- ray with large periproct opening through calyx side. |
Measurements
No measurements are available
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| Source: o = order, c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Kiessling 2004, Aberhan 1992 | |||||
Collections
No collection or age range data are available