Species: armatus (OWEN, 1875) LUCAS, 1902
Etymology: Latin, armatura, "arms, equipment."
= Omosaurus armatus OWEN, 1875
= Stegosaurus armatus (OWEN, 1875) LYDEKKER, 1890, non MARSH, 1877

Holotype: BMNH 46013

Locality: From the brick-pit of Swindon Brick and Tile Co. at food of Old Swindon Hill (at west end of Swindon Hills at about SU 142838; numbers given with localities are the appropriate National Grid Reference) and adjoining the Wilts and Berks Canal (Daves 1876), Wiltshire County, England, Southern United Kingdom.

Horizon: Lower Kimmeridge Clay.

Biostratigraphy:

Age: Oxfordian-Kimmeridgian Stage, Lower-Middle Malm Epoch, Late Jurassic.

Material:

Brake down as follows:

BMNH 3 cervical vertebrae.

BMNH 46013a: An imperfect dorsal vertebra.

BMNH 46013b: The centrum of a dorsal vertebra.

BMNH 46013c: 6 dorsal vertebrae.

BMNH 46013d: An anterior caudal vertebra with its chevron.

BMNH 46013e: A middle caudal vertebra.

BMNH 46013f: 2 anterior caudal vertebrae.

BMNH 46013g: Left humerus.

BMNH 46013h: Left ulna.

BMNH 46013I: Left radius.

BMNH 46013j: The 3rd left metacarpal.

BMNH 46013k: 4th left metacarpal.

BMNH 46013l: Bones of the carpus and metacarpus, comprising the scaphoid, cuneiform, unciform and 3 metacarpals.

BMNH 46013m: A phalanagel.

BMNH 46013n: A left dermal tail spine.

BMNH 46013o: A mass of matrix containing 6 dorsal, sacral and 8 caudal vertebrae, ribs, both ilia, and right ischium and femur.

BMNH 46013p: Left ischium.

BMNH 46013q: Right pubis.

BMNH 46013r: Left pubis.

BMNH 46013: Right tibia.

BMNH: Distal end of fibula and calcaneum, left metatarsal IV; right dermal plate from neck.

Referred specimens:

Locality: Gillingham Pottery Co., Gillingham, Dorsetshire from the large pit south of the railway station (ST 809258) Dorset County, England, Southern United Kingdom.

Horizon: Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

BMNH R5902: Right humerus, radius, ulna, carpals, metacarpals II and IV and metatarsals III.

 

Locality: Smallmouth Sands, Weymouth, , (SY 669764-SY 672772), Dorset County, England, Southern United Kingdom.

Horizon: Lower Kimmeridgian Clay.

Biostratigraphy:

Age: Early Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

BMNH 45910: Neural arch of mid-caudal vertebra.

 

Locality: Ely, (probably from one of several pits at TL 55508), Cambridgeshire County, England, Southern United Kingdom.

Horizon: Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

SMC J.29486, J.29488, J.29491: Three isolated vertebrae.

 

 

Locality: Murteiras, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

G. Z. 1946: Caudals, sacrum, 4 sacral vertebrae, ischium, pubis, femur, = Omosaurus hastiger OWEN 1877

 

 

CASANOVAS-CLADELLAS, SANTAFE-LLOPIS, SANTISTEBAN VOE & PEREDA-SUBERBIOLA, 1999

Locality: Cerrito del Olmo, Valencia, Aras de Alpuente, Spain.

Horizon: Purbeck.

Biostratigraphy:

Age: Tithonian Stage, Upper Malm Epoch, Late Jurassic.
Note: Was thought to be Early Cretaceous.

Material:

VAL CO-1, 2: Cervical vertebrae.

VALCO-3, 5: Fragmentary cervicals.

VALCO-4, 7: Fragmentary dorsals.

VALCO-6, 8: Fragmentary caudals.

VALCO-9: Fragment de cuerpo de vertebra cervical.

VALCO-10: Fragmento de cuerpo de vertebra caudal.

VALCO-11: Anterior dorsal costal.

VALCO-12: Costalla dorsal mas posterior.

VALCO-13: Fragmento proximal de costilla dorsal.

VALCO-14, 15: Fragmento distal de costillas.

VALCO-16: Fragment of right ischium.

VALCO-17, 18: Fragmentary sacral vertebrae.

VALCO-19-22: Fragmento de hueso indeterminado.

VALCO-23: Fragmento de cuerpo vertebral caudal.

VALCO-24: Fragmento de cuerpo vertebral cervical.

VALCO-25: 3 fragmentary costals.

VALCO-II: Left femur.

 

CASANOVAS-CLADELLAS, SANTAFE-LLOPIS & PEREDA-SUBERBIOLA, 1995

Locality: Losilla I locality, Valencia, Aras de Alpuente, Spain.

Horizon: Purbeck.

Biostratigraphy:

Age: Tithonian Stage, Upper Malm Epoch, Late Jurassic.
Note: Was thought to be Early Cretaceous.

Material:

Lo l-1: Fragmentary posterior cervical vertebra.

Lo 1-2: Fragmentary dorsal vertebra.

Lo 1-3: Nearly complete dorsal vertebra.

Lo 1-4: Fragmentary caudal vertebra.

Lo 1-5: Fragmentary caudal vertebra.

Lo 1-6: Fragmentary caudal vertebra.

Lo 1-7, -8: Dorsal centra.

 

 

DELAIR, 1973

Locality: Swindon, Wiltshire County, England, Southern United Kingdom.

Horizon: Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

OUM J.1644, J.1645: 2 dermal spines.

 

COBOS & GASCO, 2013

Locality: Barranco Conejero (Rd-46), Riodeva, RD-3, El Romeral, Teruel Province, Spain.

Horizon: Villar del Arzobispo Formation.

Biostratigraphy:

Age: Portlandian, Tithonian Stage, Upper Malm Epoch, Late Jurassic-Berriasian Stage, Lower Neocomian Subepoch, Lower Early Cretceous Epoch, Early Cretaceous.

Material:

MAP-4488, 4489: Cervical centra.

MAP-4490: Dorsal centrum.

MAP-4491: Caudal centrum.

 

ESCASO, ORTEGA, DANTAS, MALAFAIA, SILVA& SANZ, 2007

Locality: Mocafaneira, Torres Vedras, Portugal.

Horizon: Sobral Formation, Lourinha Group.

Biostratigraphy:

Age: Late Kimmeridgian Stage, Middle Malm Epoch-Early Tithonian Stage, Upper Malm Epoch, Late Jurassic.

Material:

ALT.Moc.01.00016: Dorsal vertebra, dorsal centra, fragmentary dorsal neural spine, sacral rib, fragmentary sacrum, right pubis and fragmentary plate.

 

 

LAPPARENT & ZBYSZEWSKI, 1957/GALTON, 1991

Locality: Pedras Muits about 1,500 m to the east of Baleal, Portugal.

Horizon:

Biostratigraphy:

Age:?Middle Upper Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

MSGP A: Fragmentary pelvis, first caudal, right femur.

 

Locality: Murteiras ravine, which ends a the sea cliff to the north of Foz do Arelho, Portugal.

Horizon:

Biostratigraphy:

Age:?Middle Upper Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

MSGP B: 5 cervical centra, 3 dorsal centra, both ilia, sacrum, and 2 caudal vertebrae, left femur, right and left long tail spine.

 

Locality: 1 km southeast of Alfeizerao, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: ?Middle to Lower Upper Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

MSGP C, MIGM4877: Anterior dorsal vertebra, a portion of the middle and distal end of long tail spine.

Number: Not given: And an fragmentary egg.

MAIDMENT, NORMAN, BARRETT, & UPCHURCH, 2008

MIGM 4921: Cervical, dorsal and caudal vertebrae.

MIGM 4922: Cervical vertebra.

MIGM 4923: Dorsal vertebrae.

MIGM 4924: Partial proximal end of a right humerus.

MIGM 4971: Partial right femur.

 

Locality: On the edge of the ravine that starts to the south of Montoito mill and which opens at the extreme southern end of the Peralta beach at Atalaia, Vale de Portinheiro, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: ?Upper Lower Tithonian Stage, Upper Malm Epoch, Late Jurassic.

Material:

MSGP D, MIGM4953: Sacrum, anterior caudal vertebra, left ilium, fragmentary right ilium, right femur, poorly preserved left stocky tail spine.

 

 

Locality: On the sea cliff next to the beach of Areia Branca, Portugal.

Horizon:

Biostratigraphy:

Age: ?Upper Lower Tithonian Stage, Upper Malm Epoch, Late Jurassic.

Material:

MSGP E: 2 damaged anterior caudals.

 

Locality: Vale do Portinheiro, Portugal.

Horizon:

Biostratigraphy:

Age: ?Upper Kimmeridgian to Lower Tithonian Stage, Middle-Upper Malm Epoch, Late Jurassic.

Material:

MSGP J: A base of a right stock dermal spine.

 

 

Locality: Porto Nova, Maceiria, Portugal.

Horizon: ?

Biostratigraphy:

Age: Upper Kimmeridgian to Lower Tithonian Stage, Middle Malm Epoch, Late Jurassic.

Material:

MSGP K: A base of a left dermal spine.

 

 

Locality: From the cliffs of the beach of San Bernaradion underneath the walls of the ancient monastery of San Bernardino, Portugal.

Horizon:

Biostratigraphy:

Age:? Middle or Lower Upper Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

IST A: Right femur.

 

 

LYDEKKER, 1888

Locality: Swindon Brick and Tile company, Wiltshire County, England, Southern United Kingdom.

Horizon: Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

BMNH 47329: Centrum of a posterior caudal vertebra.

 

MAIDMENT, NORMAN, BARRETT, & UPCHURCH, 2008

Locality: Near Salas de los infantes, Burgos, Spain.

Horizon: Piedrahita de Muno Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

PS-TZA 20: Partial dorsal vertebra.

PS-TZA 17: Fragmentary dermal plate.

TELLES ANTUNES & MATEUS, 2003

Locality: Casal da Pedreira, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

MIGM 4830, 4834, 4836, 4837, 4839-41, 4844-5:

 

Locality: Lagido da Vermelha, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

ML436:

 

Locality: Miragaia, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

ML433:

 

Locality: Mocafaneira, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

ECTV, ALT:

 

 

Locality: Peralta, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

ML464:

 

 

Locality: Porto das Barcas, Lourinha Municipality, Bombarral Sub-Basin, Lusitanian Basin, Portugal.

Horizon: Sobral Formation.

Biostratigraphy:

Age: Late Kimmeridgian-basal Tithonian Stage, Malm Epoch, Late Jurassic.

Material:

ML 489:

 

 

Locality: Praia da Areia Branca, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

MIGM4862:

 

Locality: Porto Novo, Maceira, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

MIGM:

 

Locality: Praia da Malhada, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

ML439, ML812:

 

Locality: top of the cliffs at Pedras Muitas, near Baleal, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

MIGM 4846: An anterior caudal vertebra.

MIGM 4850: Partial pubis.

MIGM 4851: Metacarpal.

MIGM 4852: Ischium.

MIGM 4929: A partial ilio-sacral block.

MIGM 4859: Dermal spine.

MIGM 4935: Femur.

MIGM 8797:

 

Locality: Porto Dinheiro, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

MHNUL, ML:

 

Locality: S. Bernardino, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

IST:

 

 

Locality: Sesimbra Beach, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

MNHUL:

 

Locality: Vale Pombas, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

ML417:

 

Locality: Valmitao, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage-Tithonian Stage, Middle – Upper Malm Epoch, Late Jurassic.

Material:

ML446:

 

= Omosaurus hastiger OWEN, 1877 (Note: GALTON, 2016 suggest this may be a Stegosauria incertae).
Etymology:

Holotype: NHMUK (old BMNH) OR46320

Locality: Wootton Bassett, (SU 0683), Wiltshire County, England, Southern United Kingdom.

Horizon: Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material: A dermal spine wanting the summit.

Referred material:

NHMUK (old BMNH) OR46321: Transverse section from the upper extremity of the preceding specimen.

NHMUK (old BMNH) OR46322: A similar dermal sine.

Number: Not given: Two dermal tail spines.

 

= Omosaurus lennieri NOPCSA, 1911
Etymology: In honor of Prof. Lennier.
= Dacentrurus lennieri (NOPCSA, 1911) HENNING, 1915

Holotype: MHNHA (destroyed in 1944)

Locality: 30 m north of the Etapeniers Road, Le Briere, Argiles d'Octeville, Cap de la Heve, Seine-Maritime Department, Normandy, France.

Horizon: Argiles d'Octeville.

Biostratigraphy: mutabilis Zone.

Age: Lower Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material: 10 vertebrae (cervicals, dorsals, caudals), distal end of ischia and pubes, incomplete femur, and 6 fused sacrals with coosified portion of ilium.

Referred specimens:

Locality: Plage d'Areia Branca, Portugal.

Horizon: Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

MGSP: 9 caudal vertebrae and a fragment of nuchal plate.

 

GALTON & BOINE, 1980

Locality: La Briere, Octeville, Cap de la Heve, Seine-Maritime Department, Normandy, France.

Horizon: Lower Kimmeridge Clay.

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

Private collection of M. G. Boine: Distal end of left femur.

 

LAPPARENT & ZBYSZEWSKI, 1957

Locality: Murteiras, Foz do Arelho, Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

MIGM 4860-1, 4864: Fragment of a spine, 9 caudal centra, base of sine, left femur, complete pelvis.

MIGM 4861: Cervical and dorsal vertebrae.

MIGM 4855, 4858, 4864: Caudal vertebrae.

MIGM 4876, 4870: Dermal armor.

MIGM 4977: Left femur.

MIGM 5782: Ilio-sacral block.

Locality: 2 km NE de Pombal, Portugal.

Horizon:

Biostratigraphy:

Age: ?Upper Kimmeridgian to Lower Tithonian Stage, Middle-Upper Malm Epoch, Late Jurassic.

Material:

MSGP L: Base of a dermal spine.
Note: It is probably form a sauropod dinosaur rather than Dacentrurus (GALTON, 1991)

 

 

Locality: Atalaia, Lourinha, Estremadura Province, Portugal.

Horizon:

Biostratigraphy:

Age: ?Upper Kimmeridgian to Lower Tithonian Stage, Middle-Upper Malm Epoch, Late Jurassic.

Material:

MGS H: A fragmentary right femur of a juvenile.

MAIDMENT, NORMAN, BARRETT & UPCHURCH, 2008

MIGM 4872: 2 caudal vertebrae.

MIGM 4953: An ilio-sacral block.

MIGM 4969: Rigth femur.

MIGM 4869: Dermal armor.

 

= Astrodon pusillus LAPPARENT & ZBYSEWSKI, 1957
Etymology: Latin, pusillus, "tiny."

Locality: Canal du Pedreira, Lourinha, Estremadura Province, Portugal (near the west coast, about 60 km north of Lishbon)

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material:

MGSP F: Proximal end of right femur, ?calcaneum, metatarsal III, ?posterior end of pubes, distal end of right radius, proximal end of metacarpal I, ungual phalanx of manus, anterior sacral, dorsal centrum, 1st dorsosacral centrum, sacral, 2nd and 3rd anterior caudal centra, ventrolateral parts of left and right sacral ribs.

A) Dorsal, and caudal centra; B) ?calcaneum; C) Proximal end of right femur; D) proximal end of metacarpal I; E) ungual phalanx of manus; F) metatarsal III; G) ?posterior end of pubes.

Referred material:

Locality: From the beach of area Branca on the west Coast of Portugal.

Horizon:

Biostratigraphy:

Age: Kimmeridgian Stage?, Middle Malm Epoch, Late Jurassic.

Material:

MGSP G: Centrum of an anterior caudal vertebra.

 

Locality: Porto de Mos, Portugal.

Horizon:

Biostratigraphy:

Age: ?Upper Kimmeridgian to Lower Tithonian Stage, Middle-Upper Malm Epoch, Late Jurassic.

Material:

MGSP I: Proximal end of a metacarpal.