Goniochele angulata (Bell, 1858)

Goniochele angulata was a crab which lived between 56.0 - 47.8 Ma. It is quite rare a can be found at a few sites within the London Clay. It was carnivorous and had well developed eyesight. It can be easily identified from the carapace which can be seen below. 

It has been found at Sheppey, Butts Cliff, Allhallows, Aveley, Medway Estuary, Maylandsea, Seasalter and Tankerton. 

Description: Carapace hexagonal, broader than long, widest at strong spine posteriorly, triangular front slightly produced, orbits wide, ovate, outer orbital spine broadly triangular, three anterolateral spines, epibranchial ridge extends from third spine; gastric and median lobes tumid, metabranchial lobes depressed either side of parallel ridges. 

(Description from: A guide to the fossil Decapoda (Crustacea: Axiidea, Anomura, Brachyura) of the British Isles)