| Tamisiocaris Temporal range: | |
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| Movement of a frontal appendage | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | † Dinocaridida |
| Order: | † Radiodonta |
| Family: | † Tamisiocarididae |
| Genus: | † Tamisiocaris Daley & Peel, 2010 |
| Species: | †T. borealis |
| Binomial name | |
| †Tamisiocaris borealis Daley & Peel, 2010 | |
| Part of a series on |
| The Cambrian explosion |
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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] and is also known from the Kinzers Formation in Pennsylvania . [2] 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. [1] It is assigned to the family Tamisiocarididae, and is measured about 22.8–33.6 cm (0.75–1.10 ft) long. [3]
