[D] Polacanthus [sG]
Describer
Owen vide [Anonymus], 1865
Time
Cretaceous Early Valanginian Hauterivian Barremian
Classification
Ornithischia Thyreophora Eurypoda Ankylosauria Ankylosauridae
Diet
Herbivore
Fossilsite
England [Utah, US?]
Typespecies
Polacanthus foxii
Length
4 m
Info
Genus
Polacanthus (Owen vide [Anonymus], 1865) = Euacanthus vectianus (Owen vide Tennyson, 1897)
Polacanthus > Polacanthus foxii (Hulke, 1881) (= [Hylaeosaurus foxii], Hulke, 1881) >> Polacanthus becklesi (Hennig, 1902) > Polacanthus rudgwickensis (Blows, 1996)
Polacanthus > Polacanthus marshi (Lucas, 1901) >> Hoplitosaurus marshi (Lucas, 1901) >> Stegosaurus marshi (Lucas, 1901)
Polacanthus (\\\\\\\"many spikes\\\\\\\") is an early primitive Britisch ankylosaurid, which was discovered by the Rev. Willaim Fox. The skeleton, which consisted of the hind part of the animal including many spines, various back and tail vertebrae, the hips and hind legs, had evidently weathered out of the cliffs of the coast of the Isle of Wight.
Is seems quite likely that much of the skeleton was present originally but that, once exposed by a cliff fall much was lost by being washed out to sea. First seen as an nodosaurid however, recent studies indicate that Polacanthus (from the Barremian of the Isle of Wight and other localities) is actually a very primitive ankylosaurid. (Thanks to Thomas R. Holtz Jr. for the refs and information)
Pereda-Superbola, Meijide, Torcida, Welle, Fuentes, Izquierdo, Monetro, Perez and Urién , 1999 described various ankylosaurian dermal armor elements (PS-FES) collected from red clays of the Fuente Espudia locality, Urbion Group, (Weald Facies), of the western Cameros Basin (Lower Cretaceous, Barremian-Aptian) near Salas de los Infantes (Burgos Province, which these authors referred to Palacanthus sp. on the basis of the form of the caudal spines. The material including two caudal spines, several verry small osteoderms, and various fragments apparently belonging to a single individual.
Owen vide [Anonymus], 1865
Time
Cretaceous Early Valanginian Hauterivian Barremian
Classification
Ornithischia Thyreophora Eurypoda Ankylosauria Ankylosauridae
Diet
Herbivore
Fossilsite
England [Utah, US?]
Typespecies
Polacanthus foxii
Length
4 m
Info
Genus
Polacanthus (Owen vide [Anonymus], 1865) = Euacanthus vectianus (Owen vide Tennyson, 1897)
Polacanthus > Polacanthus foxii (Hulke, 1881) (= [Hylaeosaurus foxii], Hulke, 1881) >> Polacanthus becklesi (Hennig, 1902) > Polacanthus rudgwickensis (Blows, 1996)
Polacanthus > Polacanthus marshi (Lucas, 1901) >> Hoplitosaurus marshi (Lucas, 1901) >> Stegosaurus marshi (Lucas, 1901)
Polacanthus (\\\\\\\"many spikes\\\\\\\") is an early primitive Britisch ankylosaurid, which was discovered by the Rev. Willaim Fox. The skeleton, which consisted of the hind part of the animal including many spines, various back and tail vertebrae, the hips and hind legs, had evidently weathered out of the cliffs of the coast of the Isle of Wight.
Is seems quite likely that much of the skeleton was present originally but that, once exposed by a cliff fall much was lost by being washed out to sea. First seen as an nodosaurid however, recent studies indicate that Polacanthus (from the Barremian of the Isle of Wight and other localities) is actually a very primitive ankylosaurid. (Thanks to Thomas R. Holtz Jr. for the refs and information)
Pereda-Superbola, Meijide, Torcida, Welle, Fuentes, Izquierdo, Monetro, Perez and Urién , 1999 described various ankylosaurian dermal armor elements (PS-FES) collected from red clays of the Fuente Espudia locality, Urbion Group, (Weald Facies), of the western Cameros Basin (Lower Cretaceous, Barremian-Aptian) near Salas de los Infantes (Burgos Province, which these authors referred to Palacanthus sp. on the basis of the form of the caudal spines. The material including two caudal spines, several verry small osteoderms, and various fragments apparently belonging to a single individual.