### animal | vertebrate | reptile | dinosaur:

Bipedal dinosaur
* Most bipedal dinosaurs have feet.
* Some bipedal dinosaurs have enormous teeth

Carnivorous dinosaur
* Most carnivorous dinosaurs have legs
  - strong legs
  - possess teeth
* Some carnivorous dinosaurs have brains
  - enormous teeth

Carnosaur
* are characterized by several features, mostly modifications of the pelvis and hind legs.
* have a different body morphology then tyrannosaurs.

Dromaeosaur
* are part of the theropod group of dinosaurs
  - possibly the closest known relatives of birds
* belong to the family of meat-eating dinosaurs known as therapods.
* lack mobile shoulder and pectoral girdles.
* share a common ancestor with the stock that spawned Archaeopteryx.

Hadrosaur
* are inferred to have been terrestrial most of the year
  - probably the best known ornithopods that left tracks attributable to the trackmaker
* take their popular name from their toothless duck-like beaks at the front of their jaws.

Horned dinosaur
* are common, as are armored ankylosaurs and spiky nodosaurs.
* have one of the best fossil records of any group of dinosaurs.

Iguanodon
* has the most specialized hands of any dinosaur.
* means iguano tooth.

Ornithischian
* All ornithischians are united by a pubis pointing backward, running parallel with the ischium.
* Some ornithischians eat plants.
* Some ornithischians have bones
  - hips
* includes brains
  - breasts
  - cell membranes
  - cells
  - chest cavities
  - chests
  - corpi
  - cytoplasm
  - ears
  - faces
  - heads
  - nuclei
  - pedal extremities
  - plasma membranes
  - rib cages
  - sections
  - skulls
  - sterna
  - vacuoles
  - vertebrate feet

Ornithischian dinosaur
* Most ornithischian dinosaurs have tails.
* Some ornithischian dinosaurs have features
  - special features
  - spikes

Ornithomimid
* are a sister group to the troodontids
  - the so-called ostrich dinosaurs
+ Ornithomimidae: Coelurosaurs
  * Ornithomimids are a sister group to the troodontids. These groups had many bird-like features, including feathers, but they were not birds.

Ornithopod
* are the bipedal group.
* have the most complete geologic record of any major dinosaur clade.

### animal | vertebrate | reptile | dinosaur:

Sauropod
* Many sauropods are known from so few bones that comparing their relationships is often difficult.
* Most sauropods feed on angiosperm plants
* Most sauropods get oxygen
  - vital oxygen
* Most sauropods have a long neck and a rather small head
  - chest muscles
* Most sauropods have powerful chest muscles
  - soft tissue
  - thick legs
* Most sauropods reach ages
  - maturity
  - sexual maturity
* Some sauropods attain large size
  - conserve energy
* Some sauropods have air sacs
  - hearts
  - herbivores
  - little variation
  - long necks
  - shoulder necks
  - skulls
  - tiny skulls
  - live in angiosperms
  - rely on resources
* Some sauropods use respiration
* are notable for their body form as well as their enormous size
  - of course well-known for being large animals
  - the true giants among terrestrial reptiles
  - very large plant-eaters with long necks, small heads, blunt teeth and very long tails
* differ from mammalian and ornithischian herbivores in regard to the respiratory system.
* have chest muscles
  - simple hinge joints at the knee that allow the leg only to bend
  - tiny brains
* includes brains
  - chests
  - cytoplasm
  - nuclei
  - sections
  - vacuoles
  - vertebrate feet
* need air.
* seem to have lived in herds and tended their young.
* swallow fodder.

Sauropod dinosaur
* Most sauropod dinosaurs have long necks
* Some sauropod dinosaurs are classified as sauropods.