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Sclerotized/Jaekelocarpus
Temporal range: Pennsylvanian (Morrowan), 318.1–314.6 Ma
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Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata
Class: †Stylophora
Order: †Mitrata
Family: †Jaekelocarpidae
Genus: †Jaekelocarpus
Kolata et al. 1991
Species:
†J. oklahomensis
Binomial name
†Jaekelocarpus oklahomensis
Kolata et al. 1991

Jaekelocarpus is a genus of mitrate stylophoran known from the Morrowan age of the Golf Course Formation (southern Oklahoma, USA).[1] They possessed two billaterally symmetrical complexes of four internal bars. The morphological similarity of these structures to the gill bars of cephalochordates and enteropneusts is considered a likely indicator of their homology.[2][3]

Data to consider

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LOCATION

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collected from the Pennsylvanian (Morrowan Series) Gen e Autry Shale Member, Golf Course Formatio n on the Daub e Ranch , Johnsto n County, southern Oklahoma (Figure 1).

https://www.mindat.org/paleo_strat.php?id=20981

MORROWAN date

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https://www.mindat.org/taxon-P371170.html http://carboniferous.stratigraphy.org/files/20130823124207476.pdf

nr of slits

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8, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9091856/#RSPB20220258C59

References

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  1. ^ Kolata, Dennis R.; Frest, Terrence J.; Mapes, Royal H. (September 1991). "The youngest carpoid: occurrence, affinities, and life mode of a Pennsylvanian (Morrowan) mitrate from Oklahoma". Journal of Paleontology. 65 (5): 844–855. doi:10.1017/S0022336000037811. ISSN 0022-3360.
  2. ^ Dominguez, Patrício; Jacobson, Antone G.; Jefferies, Richard P. S. (2002-06-20). "Paired gill slits in a fossil with a calcite skeleton". Nature. 417 (6891): 841–844. doi:10.1038/nature00805. ISSN 1476-4687.
  3. ^ Álvarez-Armada, Nidia; Cameron, Christopher B.; Bauer, Jennifer E.; Rahman, Imran A. (2022-05-11). "Heterochrony and parallel evolution of echinoderm, hemichordate and cephalochordate internal bars". Proceedings of the Royal Society B: Biological Sciences. 289 (1974). doi:10.1098/rspb.2022.0258. ISSN 0962-8452. PMC 9091856. PMID 35538784.{{cite journal}}: CS1 maint: PMC format (link)


Category:Carboniferous echinoderms Category:Homalozoa Category:Stylophora Category:Mitrata

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