| Jeletzkya Temporal range: Early Pennsylvanian PreꞒ Ꞓ O S D C P T J K Pg N | |
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| Artist's reconstruction of J. douglassae swimming above a Tullimonstrum. | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Coleoidea |
| Superorder: | †Belemnoidea |
| Genus: | †Jeletzkya |
| Species: | †J. douglassae |
Jeletzkya douglassae is a fossil belemnoid from the early Pennsylvanian Mazon Creek lagerstätten and represents the earliest known crown-group squid. Non-mineralized anatomy is preserved and comprises ten hooked tentacles and a radula. It is too poorly understood for assignment to any particular cephalopod taxon. J. douglassae is 14 mm long.
References
- Johnson, RG; Richardson ES, Jr (1968-02-02). "Ten-armed fossil cephalopod from the Pennsylvanian of Illinois". Science. 159 (814): 526–8. doi:10.1126/science.159.3814.526. JSTOR 1722879. PMID 5635152. S2CID 26571989.
- Whalen, Christopher D.; Landman, Neil H. (2022-03-08). "Fossil coleoid cephalopod from the Mississippian Bear Gulch Lagerstätte sheds light on early vampyropod evolution". Nature Communications. 13 (1): 1107. doi:10.1038/s41467-022-28333-5. ISSN 2041-1723. PMC 8904582. PMID 35260548.
| Taxon identifiers | |
|---|---|
| Jeletzkya | |
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