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Pachycephalocrinus
Taxonomy
Pachycephalocrinus was named by Cole and Toom (2019). Its type is Pachycephalocrinus jaanussoni.
It was assigned to Pachycephalocrinidae by Cole and Toom (2019).
It was assigned to Pachycephalocrinidae by Cole and Toom (2019).
Species
P. jaanussoni (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2019 | Pachycephalocrinus Cole and Toom p. 603 |
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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. †Pachycephalocrinus Cole and Toom 2019
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†Pachycephalocrinus jaanussoni Cole and Toom 2019
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 1992, Kiessling 2004, Aberhan et al. 2004 | |||||
Collections
No collection or age range data are available