[D] Echinodon becklessi [Su] [sG] [T]
Describer
Owen, 1861
Time
Jurassic Late Tithonian
Classification
Ornithischia Ornithopoda Heterodontosauridae
Diet
Herbivore
Fossilsite
Middle Purbeck Beds, Dorset, England
Length
0,6 meter
Info
Genus - Typespecies - Skull
Echinodon becklessi (Owen, 1861) > Sauraechmodon (Falconer, 1861)
\\\\\\\"prickly tooth\\\\\\\" Hugh Falconer originally suggested the name \\\\\\\"Sauraechmodon\\\\\\\" for the teeth. Owen wrongly reported Falconer\\\\\\\'s proposed name as \\\\\\\"Sauraechinodon\\\\\\\" in the 1861 formal description, and chose to abridge his colleague\\\\\\\'s supposed spelling to Echinodon instead. Falconer promptly protested authorship of the \\\\\\\"barbarism\\\\\\\" \\\\\\\"Sauraechinodon.\\\\\\\" (Romer, 1956) incorrectly cited \\\\\\\"Saurechinodon\\\\\\\" as the valid name Echinodon is not preoccupied.)
Echinodon is a small ornithischian having one or possible two caniniform teeth located at anterior end of maxilla (Norman and Barrett, 2002).
Sereno (1997, Annual Rev. Earth & Planetary Sci.) refers Echinodon to the Heterodontosauridae. Heterodontosaurids are named for their heterodont dentition, which includes a short upper (premaxillary) canine and longer lower (dentary) canine fitted into an arched diastema between the premaxilla and maxilla. Except for Abrictosaurus, all heterodontosaurids including Echinodon exhibit these dental features.
Norman and Barrett (2002) designated BMNH 48209, (incorrectly sited by Galton, 1978 as BMNH 48290) left and right premaxillae, anterior portion of left maxilla, naturalmolds of caudal part of maxilla and of several maxillarly and dentary teeth, and BMNH 48210 (incorrectly, cited by Sereno, 1991 as BMNH R48210) posterior portion of left maxilla, left pterygoid, ?jugal, ?palatine, as lectotypes of E. becklessi, both specimen representing the same individual.
Paralectotypes
BMNH 48211 (incorrectly listed as BMNH R48211 by Sereno), a partial right maxilla, lacrimal, and palatine; BMNH 48212, partial right maxilla; BMNH 48213, left dentary; BMNH 48214, right dentary lacking teeth; BMNH 48215a, right dentary; BMNH 48215b, left dentary; BMNH 48215c, plaster cast; of orignial block 48215 showing natural mold of tooth bearing bone.
Additional material
BMNH 48229, jaw fragment associated with several indeterminate bones from the \\\\\\\"Middle Purbeck Beds\\\\\\\" [= Cherty Freshwater Beds] of Durlston Bay; BMNH 40723 a partial ?right dentary from the Dirt Bed, Purbeck Beds near Swanage; DORCM GS 1194, 1212-6, 1222-3 isolated teeth, from the Charty Freshwater BEds (Middle Purbeck Beds), Sunnydown Farm, Langton Mattravers, near Swannage; DORCM GS 1164-5, 1167, 1171, isolated teeth from the Cherty Freshwater Beds, Lovell\\\\\\\'s Quarry, Langton Mattravers
Owen, 1861
Time
Jurassic Late Tithonian
Classification
Ornithischia Ornithopoda Heterodontosauridae
Diet
Herbivore
Fossilsite
Middle Purbeck Beds, Dorset, England
Length
0,6 meter
Info
Genus - Typespecies - Skull
Echinodon becklessi (Owen, 1861) > Sauraechmodon (Falconer, 1861)
\\\\\\\"prickly tooth\\\\\\\" Hugh Falconer originally suggested the name \\\\\\\"Sauraechmodon\\\\\\\" for the teeth. Owen wrongly reported Falconer\\\\\\\'s proposed name as \\\\\\\"Sauraechinodon\\\\\\\" in the 1861 formal description, and chose to abridge his colleague\\\\\\\'s supposed spelling to Echinodon instead. Falconer promptly protested authorship of the \\\\\\\"barbarism\\\\\\\" \\\\\\\"Sauraechinodon.\\\\\\\" (Romer, 1956) incorrectly cited \\\\\\\"Saurechinodon\\\\\\\" as the valid name Echinodon is not preoccupied.)
Echinodon is a small ornithischian having one or possible two caniniform teeth located at anterior end of maxilla (Norman and Barrett, 2002).
Sereno (1997, Annual Rev. Earth & Planetary Sci.) refers Echinodon to the Heterodontosauridae. Heterodontosaurids are named for their heterodont dentition, which includes a short upper (premaxillary) canine and longer lower (dentary) canine fitted into an arched diastema between the premaxilla and maxilla. Except for Abrictosaurus, all heterodontosaurids including Echinodon exhibit these dental features.
Norman and Barrett (2002) designated BMNH 48209, (incorrectly sited by Galton, 1978 as BMNH 48290) left and right premaxillae, anterior portion of left maxilla, naturalmolds of caudal part of maxilla and of several maxillarly and dentary teeth, and BMNH 48210 (incorrectly, cited by Sereno, 1991 as BMNH R48210) posterior portion of left maxilla, left pterygoid, ?jugal, ?palatine, as lectotypes of E. becklessi, both specimen representing the same individual.
Paralectotypes
BMNH 48211 (incorrectly listed as BMNH R48211 by Sereno), a partial right maxilla, lacrimal, and palatine; BMNH 48212, partial right maxilla; BMNH 48213, left dentary; BMNH 48214, right dentary lacking teeth; BMNH 48215a, right dentary; BMNH 48215b, left dentary; BMNH 48215c, plaster cast; of orignial block 48215 showing natural mold of tooth bearing bone.
Additional material
BMNH 48229, jaw fragment associated with several indeterminate bones from the \\\\\\\"Middle Purbeck Beds\\\\\\\" [= Cherty Freshwater Beds] of Durlston Bay; BMNH 40723 a partial ?right dentary from the Dirt Bed, Purbeck Beds near Swanage; DORCM GS 1194, 1212-6, 1222-3 isolated teeth, from the Charty Freshwater BEds (Middle Purbeck Beds), Sunnydown Farm, Langton Mattravers, near Swannage; DORCM GS 1164-5, 1167, 1171, isolated teeth from the Cherty Freshwater Beds, Lovell\\\\\\\'s Quarry, Langton Mattravers