Chuandianella

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Chuandianella
Temporal range:
Ma
↓
Reconstruction
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
(unranked): Tactopoda
Phylum: Arthropoda
Class: incertae sedis
Genus: †Chuandianella
Hou and Bergström, 1991
Species:
†C. ovata
Binomial name
†Chuandianella ovata
(Li, 1975)
Synonyms[1]
  • Mononotella ovata Li, 1975
  • Waptia ovata (Li, 1975)

Chuandianella ovata is an

Chengjiang Biota in Yunnan, China.[2]

Taxonomy

It was originally described in 1975 under the "

stem-group arthropod" as opposed to the more derived mandibulate hymenocarines.[6]

Description

Diagram

Specimens of Chuandianella reach a total body length of up to 30 millimetres (1.2 in). Chuandianella ovata had a bivalved carapace up to 14.5 millimetres (0.57 in) long with a medial fold line.

endites projecting perpendicularly from the limb axis, which have been described as "feather like". The exopods are short and paddle-shaped. The trunk terminates with a pair of elongate caudal flukes.[6]

Ecology

It has been suggested that it was an active swimmer and a filter feeder, using its feathery endopod endites to capture small food particles from the water column, with the short second appendage used to help process food.[6] Specimens of Chuandianella have been found with up to 100 eggs, each 0.5 millimetres (3⁄128 in) across, adhered to the inside surface of the bivalved carapace, this is thought to have been a form of brood care to protect the eggs against predators.[8]

See also

References

  1. ^ "Chuandianella ovata". Paleobiology Database. Retrieved February 16, 2012.
  2. ^ "Chuandianella". Paleobiology Database. Retrieved February 16, 2012.
  3. doi:10.1111/1475-4983.00229
    .
  4. ^ "Waptia fieldensis". Royal Ontario Museum. 2011. Archived from the original on September 27, 2013. Retrieved January 14, 2012.
  5. ^ Hu-Qin Liu & De-Gan Shu (2004). "澄江化石库中川滇虫属化石的新信息" [New information on Chuandianella from the Lower Cambrian Chengjiang Fauna, Yunnan, China]. Journal of Northwest University (Natural Science Edition) (in Chinese). 34 (4): 453–456.
  6. ^
    S2CID 247123967
    .
  7. S2CID 238645514
    .
  8. PMID 32426476
    .
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