''Koelga'' is an extinct genus of

prawn Prawn is a common name for small aquatic crustaceans with an exoskeleton and ten legs (which is a member of the order decapoda), some of which can be eaten. The term "prawn"Mortenson, Philip B (2010''This is not a weasel: a close look at nature ...

in the order

Decapoda The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is esti ...

. It contains the species ''Koelga curvirostris'' and ''Koelga muensteri''.

References

Penaeidae Jurassic crustaceans Fossils of Germany {{Dendrobranchiata-stub