A revised interpretation of the Pennsylvanian flexible crinoid Zenocrinus zeus (Echinodermata)
Moore and Strimple described the Morrowan (Lower Pennsylvanian, Bashkirian) crinoid Zenocrinus zeus, and noted significant differences in the number and arrangement of plates in the posterior interray between the holotype and the paratype, the only known specimens. A reexamination of the type specim...
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| Published in: | Journal of paleontology Vol. 90; no. 3; pp. 499 - 505 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
New York, USA
The Paleontological Society
01-05-2016
Cambridge University Press SEPM Society for Sedimentary Geology |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | Moore and Strimple described the Morrowan (Lower Pennsylvanian, Bashkirian) crinoid Zenocrinus zeus, and noted significant differences in the number and arrangement of plates in the posterior interray between the holotype and the paratype, the only known specimens. A reexamination of the type specimens allowed for a reconciliation of these discrepancies. The new interpretation of Z. zeus necessitates a revision of the diagnosis, and a new plate diagram is proposed. Additional morphological features of the species are described, including the presence of a generating columnal between the column proxistele and mesistele, and a ratcheting profile for the exterior surfaces of calyx ray plates. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0022-3360 1937-2337 |
| DOI: | 10.1017/jpa.2016.55 |