Dollocaris

Dollocaris; Temporal range: Jurassic PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Reconstruction of Dollocaris ingens
Scientific classification
Kingdom:	Animalia
Phylum:	Crustacea
Class:	†Thylacocephala
Order:	†Concavicarida
Family:	Dollocarididae
Genus:	†Dollocaris
Species:	D. ingens
Binomial name
	Dollocaris ingens; (van Straelen, 1923) [1]

Dollocaris was a genus of Thylacocephalan that lived during the Jurassic period. Fossils have been found in France, specifically the La Voulte-sur-Rhône lagerstätte. It is known for its massive compound eyes, giving Dollocaris a rather characteristic appearance. One species is currently known, D. ingens.[1]

Description

Dollocaris specimens measured around 20 cm (7.9 in) in length. It sported a row of small appendages to assist in swimming, as well as three pairs of clawed segmented legs,[2] but it was probably a poor swimmer, instead depending on ambush to hunt prey. It is known for its well-preserved, large compound eyes, sporting well-preserved individual retinula cells, which assisted in catching prey.[3][4]

Fossil specimen

References

"Fossil specimen - Dollocaris ingens VAN STRAELEN, 1923". science.mnhn.fr.
"Extinct crustacean Dollocaris was all eyes". phys.org.
"All eyes on me: Jurassic crustacean had largest peepers". Earth Archives.
Vannier, Jean; Schoenemann, Brigitte; Gillot, Thomas; Charbonnier, Sylvain; Clarkson, Euan (January 19, 2016). "Exceptional preservation of eye structure in arthropod visual predators from the Middle Jurassic". Nature Communications. 7 (1): 10320. doi:10.1038/ncomms10320. PMC 4735654. PMID 26785293 – via www.nature.com.

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[france-1] "Fossil specimen - Dollocaris ingens VAN STRAELEN, 1923". science.mnhn.fr.

[2] "Extinct crustacean Dollocaris was all eyes". phys.org.

[3] "All eyes on me: Jurassic crustacean had largest peepers". Earth Archives.

[4] Vannier, Jean; Schoenemann, Brigitte; Gillot, Thomas; Charbonnier, Sylvain; Clarkson, Euan (January 19, 2016). "Exceptional preservation of eye structure in arthropod visual predators from the Middle Jurassic". Nature Communications. 7 (1): 10320. doi:10.1038/ncomms10320. PMC 4735654. PMID 26785293 – via www.nature.com.