Dollocaris

Dollocaris is an extinct 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]

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]

Description

Adult specimens of Dollocaris measured over 30 cm (12 in) in length.^[2] It sported a row of small appendages to assist in swimming, as well as three pairs of clawed segmented legs,^[3] 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.^[4][5]

Fossil specimen