Cetiocaridae
| Cetiocaridae | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Stem-group: | Arthropoda |
| Class: | †Dinocaridida |
| Order: | †Radiodonta |
| Suborder: | †Anomalocarida |
| Clade: | †Cetiocaridae Vinther et al. 2014 |
Cetiocaridae is a clade of extinct stem-group arthropods closely related to the anomalocaridids.
Naming
Cetiocaridae was named after an entry in the speculative paleoart book All Your Yesterdays by John Meszaros.[1]
Description
Cetiocarids are suspension feeders like modern basking sharks and Mysticeti. Like all anomalocarids, they have spiny anterior appendages, which are modified for use in filter feeding. Tamisocaris is estimated to have fed on prey roughly a millimeter in size.[2]
Phylogeny
Cetiocaridae is defined phylogenetically as all species more closely related to Tamisiocaris borealis than to Anomalocaris canadensis, Amplectobelua symbrachiata, or Hurdia victoria. Morphologically, the clade is diagnosed by having long, slender, recurved ventral spines on the anterior appendages possessing numerous auxiliary spines.[2]
| Radiodonta |
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References
- ↑ Kosemen, C. M. (2013). All Your Yesterdays. Irregular Books. p. 74.
- 1 2 Vinther, J.; Stein, M.; Longrich, N. R.; Harper, D. A. T. (2014). "A suspension-feeding anomalocarid from the Early Cambrian". Nature 507: 496–499. doi:10.1038/nature13010.