Waterstonella grantonensis is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of fossil

Fossil

Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...

 crustacean

Crustacean

Crustaceans form a very large group of arthropods, usually treated as a subphylum, which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill and barnacles. The 50,000 described species range in size from Stygotantulus stocki at , to the Japanese spider crab with a leg span...

 so distinct from other crustaceans that it has been placed in its own genus, Waterstonella, family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

, Waterstonellidae, and order

Order (biology)

In scientific classification used in biology, the order is# a taxonomic rank used in the classification of organisms. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family...

, Waterstonellidea. It is named after Dr. Charles Waterstone, keeper of geology at the Royal Scottish Museum, while the specific epithet commemorates the location where the fossil was found, the Granton

Granton, Edinburgh

Granton is a district in the north of Edinburgh, Scotland. Granton forms part of Edinburgh's waterfront along the Firth of Forth and is, historically, an industrial area having a large harbour. Granton is part of Edinburgh's large scale waterfront regeneration programme.-Name:Granton first appears...

 shrimp beds, near Edinburgh

Edinburgh

Edinburgh is the capital city of Scotland, the second largest city in Scotland, and the eighth most populous in the United Kingdom. The City of Edinburgh Council governs one of Scotland's 32 local government council areas. The council area includes urban Edinburgh and a rural area...

.