Genus: Hylaeosaurus MANTELL, 1833
Etymology: Greek, hylaios, “belonging to the forest (Wealden)" and Greek, sauros, “lizard”: “Wealden lizard”.
= Hyaelosaurus HUENE, 1908 (sic)
= Hylaosaurus PLIENINGER, 1847 (sic)
= Hylacosaurus del CORRO, 1974 (sic)
= Hylaeosaurus SAUVAGE, 1883 (sic)
= Hylaesaurus SAUVAGE, 1883 (sic)
= Hyleosaurus MANTELL, 1837 (sic)
= Hyloesaurus GERVAIS, 1859 (sic)
= Hylosaurus FITZINGER, 1843 (sic)

Species: armatus MANTELL, 1833
Etymology: Latin, armatura, "arms, equipment."

Holotype: NHM (old BMNH) 3775

Locality: An imprecisely located quarry of Tilgate Forest area, near Cuckfield, West Sussex County, England, Southern United Kingdom.

Horizon: Lower Wealden Formation.

Biostratigraphy:

Age: Late Valanginian Stage, Middle Neocomian Subepoch-Early Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: Base of skull, 10 anterior cervical vertebrae, 2 coracoids, 2 distal parts of scapula, fragmentary ?humerus, loose vertebrae, several ribs and armor elements consists of cervical and shoulder regions including spines, spikes, scutes and small ossicles of an immature specimen.

Referred material:


BENTON & SPENCER, 1995

Locality: Black Horse Quarry, Telham, (TQ 769142), East Sussex County, England, Southern United Kingdom.

Horizon: Hastings beds.

Biostratigraphy:

Age: Valanginian Stage, Middle Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: Vertebra.

 


CORROY, 1922

Locality: Varenes, Grandpre, France.

Horizon:

Biostratigraphy:

Age: Early Cretaceous.

Material:

Number: Not given: Teeth.

 

MANTELL, 1851

Locality: Near the little Hamlet of Bolney, West Sussex County, England, Southern United Kingdom.

Horizon: Weald Clay.

Biostratigraphy:

Age: Early Cretaceous.

Material:

BMNH Wall-case B: Scapula, humerus, phalangeal bones, and ribs.

 


Locality: Tilgate Grit, (Grinstead Clay), Tilgate Forest area, West Sussex County, England, Southern United Kingdom.

Horizon: Lower Wealden Formation.

Biostratigraphy:

Age: Late Valanginian Stage, Middle Neocomian Subepoch-Early Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

BMNH 3789 (Wall-case B): 25 caudal vertebrae, dermal osteoderms, ossified tendons, base of spines.

 


PEREDA-SUBERBIOLA, 1993

Locality: Cuckfield, West Sussex County, England, Southern United Kingdom.

Horizon: Lower Wealden Formation.

Biostratigraphy:

Age: Late Valanginian Stage, Middle Neocomian Subepoch-Early Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

BMNH 2188, 2220: 2 imperfect tibiae.

BMNH 2583, 2587: 2 fragmentary fibulae.

BMNH 2190, 28681: 2 spines.

BMNH 2123: A centrum and part of the arch of a ?posterior dorsal vertebra.

BMNH 2125: Vertebra.

BMNH 2511: An imperfect anterior caudal vertebra.

BMNH 2585: An imperfect dorsal vertebra.

LYDEKKER, 1888

BMNH 2310, 3326: Several teeth.

BMNH 26034, 36488: 2 similar teeth.

BMNH 43172: A tooth.

BMNH 2484: A fragmentary sacrum.

BMNH 36487: The centra of 4 ankylosed sacral vertebra.

BMNH 36490-94: Several dermal scutes.

BMNH 3782: Fragment of a small subcylindrical dermal spine.

BMNH 2417: Fragment of a dermal spine.

BMNH 2193: A bone which appears to be a small dermal spine.

BMNH R695: A small compressed dermal spine.

 


Locality: Silver Hill, near Hastings, East Sussex County, England, Southern United Kingdom.

Horizon: Wadhurst Clay, Lower Wealden Formation.

Biostratigraphy:

Age: Lower Valanginian Stage, Middle Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material:

BMNH R 739: Tooth.

 


Locality: Near Battle, near Hastings, East Sussex County, England, Southern United Kingdom.

Horizon: Lower Wealden Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

BMNH R647: 2 teeth.

 


Locality: St. Leonards, Sussex County, England, Southern United Kingdom.

Horizon: Lower Wealden Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

BMNH R647a: Tooth.

 

 

Locality: Isle of Wight County, England, Southern United Kingdom.

Horizon: Lower Wealden Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

BMNH 28936: The middle of a sacrum.

 


= Hylaeosaurus oweni MANTELL, 1844
Etymology: In honor of Richard Owen.

Holotype: NHMUK PV OR3789

Locality: Tilgate Forest, West Sussex, England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Early Cretaceous.

Material: A series of articulated caudal vertebrae, with some chevrons and 2 associated osterderms.

Referred material:

OWEN, 1854

Locality: Sussex County, England, Southern United Kingdom.

Horizon: Wealden Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

Royal Collage of Surgeons: Tooth.