Callovosaurus

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Callovosaurus
Temporal range:
Ma
↓
Illustration of the holotype femur
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: †Ornithischia
Clade: †Ornithopoda
Family: †Dryosauridae
Genus: †Callovosaurus
Galton, 1980
Species:
†C. leedsi
Binomial name
†Callovosaurus leedsi
Galton, 1980 (Lydekker, 1889)
Synonyms

Callovosaurus (meaning "

iguanodontian dinosaur known from most of a left thigh bone discovered in Middle Jurassic-age rocks of England. At times, it has been considered dubious or a valid genus of basal iguanodontian, perhaps a dryosaurid
.

History and description

Life restoration

Callovosaurus is

Fletton, near Peterborough in Cambridgeshire, England. The bone is 28 centimetres (0.92 ft) long, and is estimated to have belonged to an animal approximately 2.5 m (8.2 ft) in length. A partial shin bone from the same site or nearby, SMC J.46889, may also belong to Callovosaurus.[1]

The

Camptosauridae.[5] While considered a dubious iguanodontian in several reviews, which refer to it as "Camptosaurus" leedsi,[6][7] Jose Ignacio Ruiz-Omeñaca and coauthors have proposed that Callovosaurus is a valid genus, and the oldest known dryosaurid.[1]

Palaeoecology

Callovosaurus was found in the lower Oxford Clay, which has yielded a diverse reptile assemblage:

ichthyosaurs, plesiosaurs, crocodyliforms, pterosaurs, sauropod dinosaurs, the stegosaurids Loricatosaurus and Lexovisaurus, and the armoured dinosaur Sarcolestes.[1][8] These rocks were once thought to be somewhat younger, from the Oxfordian of the Late Jurassic, but they are now known to be middle Callovian in age.[1]

The diet of Callovosaurus, like that of other iguanodontians, was plant material. It is one of the earliest known members of the iguanodontian lineage.[9]

References

  1. ^
    ISBN 978-0-253-34817-3
    .
  2. S2CID 128586645
    .
  3. doi:10.5479/si.00963801.36-1666.197
    .
  4. ^ Galton, Peter M. (1975). "English hypsilophodontid dinosaurs (Reptilia:Ornithischia)" (PDF). Palaeontology. 18 (4): 741–752.
  5. ^ Galton, Peter M. (1980). "European Jurassic ornithopod dinosaurs of the families Hypsilophodontidae and Camptosauridae". Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 160 (1): 73–95.
  6. ISBN 0-520-06727-4
    .
  7. ISBN 0-520-24209-2
    .
  8. S2CID 85673680
    .
  9. ISBN 1-84028-152-9
    .

External links
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