Classification of the Dinosauria Dinosaurs are vertebrates Evolve - - PDF document

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classification of the dinosauria dinosaurs are vertebrates
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Classification of the Dinosauria Dinosaurs are vertebrates Evolve - - PDF document

Jan 13, 2023 42 likes •186 views

Classification of the Dinosauria Dinosaurs are vertebrates Evolve in the Cambrian along with other multicellular animals Tissues mineralized with calcium phosphate - teeth, bones, spines, plates, scutes Spinal cord usually protected

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Classification of the Dinosauria Dinosaurs are vertebrates

  • Evolve in the Cambrian along with other

multicellular animals

  • Tissues mineralized with calcium phosphate -

teeth, bones, spines, plates, scutes

  • Spinal cord usually protected by vertebrae.
  • Cephalized - distinct head with sensory organs

and mouth

  • Eyes
  • Mobile

All vertebrates are fish

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Tetrapods

Evolution of the Tetrapod Limb

“Lobe-fin” fish

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Two major dinosaur clades based on hip structure

“Lizard-hipped” “Bird-hipped”

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Tetanurae

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KEEL EXCAVATED Detailed and unique similarity of the keels and ventral excavations

Scelidosaurus Scutellosaurus

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Ankylosauria

tail club Ankylosaur Nodosaur broad skull with horns narrow skull body spines

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Cerapoda

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