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.
[1] 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.