Tamisiocaris (from Latin tamisium, sieve, and Greek karis, crab, shrimp) is a radiodont genus from the Cambrian period. The taxon was initially described in 2010 based on frontal appendages discovered from the Sirius Passet lagerstatte in northern Greenland..[1] A subsequent study by Vinther and colleagues in 2014 revealed that the frontal appendages were segmented and bore densely packed auxiliary spines, which were adapted to suspension feeding in a manner analogous to modern baleen whales.[2] It is assigned to the family Tamisiocarididae, and is measured about 22.8–33.6 cm (0.75–1.10 ft) long.[3]
| Tamisiocaris Temporal range:
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|---|---|
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| Movement of a frontal appendage | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Order: | †Radiodonta |
| Family: | †Tamisiocarididae |
| Genus: | †Tamisiocaris Daley & Peel, 2010 |
| Species: | †T. borealis
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| Binomial name | |
| †Tamisiocaris borealis Daley & Peel, 2010
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Phylogeny
editTamisiocaris in cladogram after Vinther et al., 2014.[2]
| Radiodonta |
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References
edit- ^ Daley, Allison & Peel, John S. (2010). "A possible anomalocaridid from the Cambrian Sirius Passet lagerstätte, North Greenland". Journal of Paleontology. 84 (2): 352–355. doi:10.1666/09-136R1.1.
- ^ a b Vinther, Jakob; Stein, Martin; Longrich, Nicholas R. & Harper, David A. T. (2014). "A suspension-feeding anomalocarid from the Early Cambrian". Nature. 507 (7493): 496–499. doi:10.1038/nature13010. hdl:1983/88f89453-e81f-4767-a74d-1794c33e6b34. PMID 24670770.
- ^ Lerosey-Aubril, Rudy and Pates, Stephen (September 2018). "New suspension-feeding radiodont suggests evolution of microplanktivory in Cambrian macronekton". Nature Communications. 9 (1): 3774. Bibcode:2018NatCo...9.3774L. doi:10.1038/s41467-018-06229-7. PMC 6138677. PMID 30218075. Dryad Data