''Jonas indicus'' is a species of crab in the family
Corystidae
Corystidae is a family of crabs, in its own superfamily, Corystoidea. It includes what was once thought to be the oldest Eubrachyuran fossil, '' Hebertides jurassica'', thought to be dating from the Bathonian (Middle Jurassic
The Middle Jura ...
.
References
Crabs
Crustaceans described in 1935
{{Corystoidea-stub