Dryosauridae

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Dryosaurids
Temporal range: Middle JurassicLate Cretaceous, 163–115 Ma
D. lettowvorbecki.jpg
Dysalotosaurus skeletal mount in Berlin
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Ornithischia
Suborder: Ornithopoda
Clade: Dryomorpha
Superfamily: Dryosauroidea
Milner & Norman, 1984
Family: Dryosauridae
Milner & Norman, 1984
Subgroups

Dryosaurids were primitive iguanodonts. They are known from Middle Jurassic to Early Cretaceous rocks of Africa, Europe, and North America.[1][2][3][4]

Phylogeny[edit]

Until recently many dryosaurids have been regarded as dubious (Callovosaurus and Kangnasaurus) or as species of the type member, Dryosaurus (Dysalotosaurus, Elrhazosaurus and Valdosaurus). However, more recent studies redescribe these genera as valid.[3][4][5][6][7] The cladogram below follows Paul M. Barrett, Richard J. Butler, Richard J. Twitchett and Stephen Hutt (2011).[7]


Rhabdodontidae


Muttaburrasaurus



Rhabdodon



Zalmoxes





Tenontosaurus


Dryomorpha


Ankylopollexia


Dryosauridae


Callovosaurus



Kangnasaurus



Dryosaurus




Dysalotosaurus




Valdosaurus



Elrhazosaurus








According to an abstract at the SVP 2014 conference, Anabisetia, Macrogryphosaurus, and Trinisaura, all from the Late Cretaceous of Gondwana, are members of Dryosauridae. If so, then Elasmaria would be a derived clade of Cretaceous dryosaurids.[8] However, other phylogenies find that elasmarians are more basal than dryosaurids.[9]

History[edit]

21st century in paleontology20th century in paleontology19th century in paleontology2020s in paleontology2010s in paleontology2000s in paleontology1990s in paleontology1980s in paleontology1970s in paleontology1960s in paleontology1950s in paleontology1940s in paleontology1930s in paleontology1920s in paleontology1910s in paleontology1900s in paleontology1890s in paleontologyEousdryosaurusElrhazosaurusValdosaurusDysalotosaurusDryosaurusKangnasaurusCallovosaurus21st century in paleontology20th century in paleontology19th century in paleontology2020s in paleontology2010s in paleontology2000s in paleontology1990s in paleontology1980s in paleontology1970s in paleontology1960s in paleontology1950s in paleontology1940s in paleontology1930s in paleontology1920s in paleontology1910s in paleontology1900s in paleontology1890s in paleontology

References[edit]

  1. ^ Norman, David B.; Weishampel, David B. (1990). "Iguanodontidae and related ornithopods". In Weishampel, David B.; Dodson, Peter; Osmólska Halszka (eds.). The Dinosauria. Berkeley: University of California Press. pp. 510–533. ISBN 0-520-06727-4. 
  2. ^ Norman, David B. (2004). "Basal Iguanodontia". In Weishampel, D.B.; Dodson, P.; Osmólska H. (eds.). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 413–437. ISBN 0-520-24209-2. 
  3. ^ a b Ruiz-Omeñaca, José Ignacio; Pereda Suberbiola Xabier; Galton, Peter M. (2007). "Callovosaurus leedsi, the earliest dryosaurid dinosaur (Ornithischia: Euornithopoda) from the Middle Jurassic of England". In Carpenter Kenneth (ed.). Horns and Beaks: Ceratopsian and Ornithopod Dinosaurs. Bloomington and Indianapolis: Indiana University Press. pp. 3–16. ISBN 0-253-34817-X. 
  4. ^ a b Galton, Peter M. (2009). "Notes on Neocomian (Lower Cretaceous) ornithopod dinosaurs from England – Hypsilophodon, Valdosaurus, "Camptosaurus", "Iguanodon" – and referred specimens from Romania and elsewhere" (pdf). Revue de Paléobiologie. 28 (1): 211–273. 
  5. ^ McDonald, A.T.; Kirkland, J.I.; DeBlieux, D.D.; Madsen, S.K.; Cavin, J.; Milner, A.R.C.; Panzarin, L. (2010). "New Basal Iguanodonts from the Cedar Mountain Formation of Utah and the Evolution of Thumb-Spiked Dinosaurs". PLoS ONE. 5 (11): e14075. doi:10.1371/journal.pone.0014075. PMC 2989904Freely accessible. PMID 21124919. 
  6. ^ Andrew T. McDonald (2011). "The taxonomy of species assigned to Camptosaurus (Dinosauria: Ornithopoda)" (PDF). Zootaxa. 2783: 52–68. 
  7. ^ a b Paul M. Barrett; Richard J. Butler; Richard J. Twitchett; Stephen Hutt (2011). "New material of Valdosaurus canaliculatus (Ornithischia: Ornithopoda) from the Lower Cretaceous of southern England". Special Papers in Palaeontology. 86: 131–163. 
  8. ^ Poole, K., 2014. A new phylogeny of iguanodontian dinosaurs. Journal of Vertebrate Paleontology 34 (5): 207A.
  9. ^ Fejfar, O.; Košťák, M.; Kvaček, J.; Mazuch, M.; Moučka, M. (2005). "First Cenomanian dinosaur from Central Europe (Czech Republic) - Acta Palaeontologica Polonica". Acta Palaeontologica Polonica. 50 (2): 295–300.