Cetiocaridae

Cetiocaridae is a clade of radiodont, an extinct stem-group arthropods. The group was named after the Bearded Ceticaris (Cetimimus barbus)[1] in the speculative paleoart book All Your Yesterdays by John Meszaros.[2] In later studies the group was renamed as a radiodont family Tamisiocarididae.[3][4]

Cetiocaridae
Frontal appendages of Anomalocaris briggsi and Tamisiocaris borealis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: †Dinocaridida
Order: †Radiodonta
Suborder: †Anomalocarida
Clade: †Cetiocaridae
Vinther et al., 2014

Description

Like most radiodonts, cetiocarids have spiny frontal appendages, but in this family the auxiliary spines are fine and densely-arranged, which are modified for use in filter feeding like modern basking sharks and mysticete whales. For example, Tamisocaris is estimated to have fed on prey roughly a millimeter in size.[5]

Classification

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 frontal appendages possessing numerous auxiliary spines on both sides.[5]

Radiodonta
 

Caryosyntrips

 
Anomalocarida
 

Anomalocarididae and Amplectobeluidae

 
 
Cetiocaridae
 

'Anomalocaris' briggsi

 
 

Tamisiocaris borealis

 
 
 

Hurdiidae

 
 
 
 

References
  1. "Bearded Ceticaris by NocturnalSea on DeviantArt". www.deviantart.com. Retrieved 2020-02-18.
  2. Kosemen CM (2013). All Your Yesterdays. Irregular Books. p. 74.
  3. Lerosey-Aubril R, Pates S (September 2018). "New suspension-feeding radiodont suggests evolution of microplanktivory in Cambrian macronekton". Nature Communications. 9 (1): 3774. doi:10.1038/s41467-018-06229-7. PMID 30218075.
  4. Pates S, Daley AC, Butterfield NJ (2019-06-11). "First report of paired ventral endites in a hurdiid radiodont". Zoological Letters. 5 (1): 18. doi:10.1186/s40851-019-0132-4. PMC 6560863. PMID 31210962.
  5. Vinther J, Stein M, Longrich NR, Harper DA (March 2014). "A suspension-feeding anomalocarid from the Early Cambrian" (PDF). Nature. 507 (7493): 496–9. doi:10.1038/nature13010. PMID 24670770.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.