Homarus morrisi 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...

 lobster

Lobster

Clawed lobsters comprise a family of large marine crustaceans. Highly prized as seafood, lobsters are economically important, and are often one of the most profitable commodities in coastal areas they populate.Though several groups of crustaceans are known as lobsters, the clawed lobsters are most...

 from the Eocene

Eocene

The Eocene Epoch, lasting from about 56 to 34 million years ago , is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The start of the...

 of southern England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

.

Taxonomy

Specimens of H. morrisi were described as early as 1849, but were assigned to Hoploparia gammaroides rather than Homarus

Homarus

Homarus is a genus of lobsters, which include the common and commercially significant species Homarus americanus and Homarus gammarus . The Cape lobster, which was formerly in this genus as H...

by scientists including Frederick M'Coy and Thomas Bell

Thomas Bell (zoologist)

Thomas Bell FRS was an English zoologist, surgeon and writer, born in Poole, Dorset, UK.Bell, like his mother Susan, took a keen interest in natural history which his mother also encouraged in his younger cousin Philip Henry Gosse. Bell left Poole in 1813 for his training as a dental surgeon in...

. In 1987, W. J. Quayle recognised that the material then ascribed to Hoploparia gammaroides represented two species, and described the new species Homarus morrisi for those which did not match the description of Hoploparia gammaroides. The specific epithet honours S. F. Morris of the Department of Palaeontology at the "British Museum (Natural History)" (now the Natural History Museum

Natural History Museum

The Natural History Museum is one of three large museums on Exhibition Road, South Kensington, London, England . Its main frontage is on Cromwell Road...

).

Stratigraphy

Homarus morrisi has been found at a range of sites across Southern England

Southern England

Southern England, the South and the South of England are imprecise terms used to refer to the southern counties of England bordering the English Midlands. It has a number of different interpretations of its geographic extents. The South is considered by many to be a cultural region with a distinct...

. It occurs in the Ypresian

Ypresian

In the geologic timescale the Ypresian is the oldest age or lowest stratigraphic stage of the Eocene. It spans the time between and , is preceded by the Thanetian age and is followed by the Eocene Lutetian age....

 London Clay

London Clay

The London Clay Formation is a marine geological formation of Ypresian age which crops out in the southeast of England. The London Clay is well known for the fossils it contains. The fossils from the Lower Eocene indicate a moderately warm climate, the flora being tropical or subtropical...

 at Bognor Regis

Bognor Regis

Bognor Regis is a seaside resort town and civil parish in the Arun district of West Sussex, on the south coast of England. It is south-south-west of London, west of Brighton, and south-east of the city of Chichester. Other nearby towns include Littlehampton east-north-east and Selsey to the...

, the Isle of Sheppey

Isle of Sheppey

The Isle of Sheppey is an island off the northern coast of Kent, England in the Thames Estuary, some to the east of London. It has an area of . The island forms part of the local government district of Swale...

, London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 and sites across Essex

Essex

Essex is a ceremonial and non-metropolitan county in the East region of England, and one of the home counties. It is located to the northeast of Greater London. It borders with Cambridgeshire and Suffolk to the north, Hertfordshire to the west, Kent to the South and London to the south west...

, the Ypresian

Ypresian

In the geologic timescale the Ypresian is the oldest age or lowest stratigraphic stage of the Eocene. It spans the time between and , is preceded by the Thanetian age and is followed by the Eocene Lutetian age....

–Lutetian

Lutetian

The Lutetian is, in the geologic timescale, a stage or age in the Eocene. It spans the time between and . The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene subepoch...

 Bracklesham Group

Bracklesham Beds

Bracklesham Beds, in geology, are a series of clays and marls, with sandy and lignitic beds, in the Middle Eocene of the Hampshire Basin, England....

 at Bracklesham Bay

Bracklesham Bay

Bracklesham Bay is a coastal bay on the west side of the Manhood Peninsula in West Sussex, England. The bay looks out onto the English Channel and the Isle of Wight is visible from the beach, as is the Nab Tower lighthouse and the Spinnaker Tower in Portsmouth.The bay is sandy and backed with...

, Selsey

Selsey

Selsey is a seaside town and civil parish, about seven miles south of Chichester, in the Chichester District of West Sussex, England. Selsey lies at the southernmost point of the Manhood Peninsula, almost cut off from mainland Sussex by the sea...

 and Whitecliff Bay

Whitecliff Bay

Whitecliff Bay is a sandy bay near the easternmost point of the Isle of Wight, England about 2 miles south-west of Bembridge and just to the north of Culver Down. It is a tourist site , has a popular beach with two hundred metres of sand and shingle, and minimal facilities including 2 cafes...

 (Isle of Wight

Isle of Wight

The Isle of Wight is a county and the largest island of England, located in the English Channel, on average about 2–4 miles off the south coast of the county of Hampshire, separated from the mainland by a strait called the Solent...

), and in the Bartonian

Bartonian

The Bartonian is, in the ICS's geological timescale, a stage or age in the middle Eocene epoch or series. The Bartonian age spans the time between and . It is preceded by the Lutetian and is followed by the Priabonian age.-Stratigraphic definition:...

 Barton Beds

Barton Beds

Barton Beds is the name given to a series of grey and brown clays, with layers of sand, of Upper Eocene age , which are found in the Hampshire Basin of southern England. They are particularly well exposed in the cliffs at Barton-on-Sea, which is the world type locality for the Barton Beds, and...

 of Christchurch Bay, Hampshire

Hampshire

Hampshire is a county on the southern coast of England in the United Kingdom. The county town of Hampshire is Winchester, a historic cathedral city that was once the capital of England. Hampshire is notable for housing the original birthplaces of the Royal Navy, British Army, and Royal Air Force...

.