Genus: Macrurosaurus SEELEY, 1876 (nomen dubium)
Etymology: Greek, makros, "long ," Greek, oura, "tail" and Greek, sauros, "lizard": “Long tailed lizard.”
= Macrosaurus THENIUS, 1972 (sic)
= Macrourosaurus SAUVAGE, 1879 (sic)
= Macrurosaurus SEELEY, 1869 (nomen nudum)
= Macrusaurus POWELL, 1987 (sic)

Species: semnus SEELEY, 1876 (nomen dubium)
Etymology:
= Macrurosaurus semnus SEELEY, 1869 (nomen nudum)

Holotype: Sedgwick Museum in Cambridge B55630-B55652

Locality: Coldham Common, Branwell, Cambridgeshire County, England, Southern United Kingdom.

Horizon: Cambridge Upper Greensand.

Biostratigraphy:

Age: Late Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material: 40 caudal vertebra.

Referred material:

LE LEOUFF, 1993

Locality: A few miles apart from the type, Barrington, Cambridgeshire County, England, Southern United Kingdom.

Horizon: Cambridge Upper Greensand.

Biostratigraphy:

Age: Late Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material:

B55653-B55654: Caudal vertebrae.

Note: LE LEOUFF, 1993: ‘Other remains from Barrington were presented by R. CONYBEARE: they include 3 procoelous caudal vertebrae and 5 associated metacarpals.’

 

LYDEKKER, 1888

Locality: England, Southern United Kingdom.

Horizon: Cambridge Greensand.

Biostratigraphy:

Age: Late Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material:

NHUMK (old BMNH) 35252: Centrum and part of the arch of a post median caudal vertebra.

NHUMK (old BMNH) 35253: A very similar specimen

NHUMK (old BMNH) 35338: Centrum and greater part of the arch of a somewhat smaller caudal vertebra.

NHUMK (old BMNH) 35389: The centrum of a considerably smaller posterior caudal vertebra.

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Species: platypus (SEELEY, 1871) HUENE, 1956
Etymology: Greek, platúpous, “flat-footed.”
= Acanthopholis platypus SEELEY, 1869 (nomen nudum) (partim)
= Acanthopholis platypus SEELEY, 1871 (nomen dubium) (partim)
= Macrurosaurus platypus (SEELEY, 1871) HUENE, 1956 (nomen dubium; initially referred to Macrurosaurus by NOPCSA, 1923)

Holotype: SMC B55449-B55453

Locality: Out of a pit at Bottisham, near Cambridge, Cambridgeshire County, England, Southern United Kingdom.

Horizon: Upper Cambridge Greensand.

Biostratigraphy:

Age: Late Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material: Metatarsals I-IV.