Size diagram

Tamisiocaris
Temporal range:
Movement of a frontal appendage
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: †Dinocaridida
Order: †Radiodonta
Genus: †Tamisiocaris
Daley & Peel, 2010
Species:
†T. borealis
Binomial name
†Tamisiocaris borealis
Daley & Peel, 2010

Tamisiocaris (from Latin tamisium, sieve, and Greek karis, crab, shrimp) is a radiodont genus initially only known from frontal appendages from the Cambrian Sirius Passet lagerstatte in northern Greenland. It was initially described initially in 2010.[1] Further study 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 34 cm (1.12 ft) long in total body length.[3]

Phylogeny

Tamisiocaris in cladogram after Vinther et al., 2014.[2]

Radiodonta

Caryosyntrips

Anomalocarida

Anomalocarididae

Amplectobeluidae

Tamisiocarididae

Echidnacaris briggsi

Tamisiocaris borealis

Hurdiidae

References

  1. ↑ 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.
  2. 1 2 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. PMID 24670770.
  3. ↑ 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.
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