Geologic Time Scale and Dinosaur Anatomy

Flashcards covering geologic time periods, specific dinosaur temporal ranges, and dinosaur skeletal anatomy including skull and post-cranial bones.

Phanerozoic

The current geologic eon in the geologic time scale.

Paleozoic

A geologic era within the Phanerozoic eon.

Mesozoic

A geologic era within the Phanerozoic eon often associated with dinosaurs.

Cenozoic

The current geologic era within the Phanerozoic eon.

Denovian

A geologic period in the Paleozoic era ending approximately $359\,Ma$.

Carboniferous

A geologic period consisting of the Mississippian and Pennsylvanian periods.

Allosaurus

A dinosaur that lived during the Late Jurassic.

Triceratops

A dinosaur that lived during the Late Cretaceous.

Tyrannosaurus

A dinosaur that lived during the Late Cretaceous.

Stegosaurus

A dinosaur that lived during the Late Jurassic.

Eoraptor

A dinosaur that lived during the Late Triassic.

Protocerotops

A dinosaur that lived during the Late Cretaceous.

Archaeopteryx

A dinosaur that lived during the Late Jurassic.

Coelophysis

A dinosaur that lived during the Late Triassic.

Velociraptor

A dinosaur that lived during the Late Cretaceous.

Utahraptor

A dinosaur that lived during the Early Cretaceous.

Premaxilla

A bone located in the skull.

Maxilla

A bone located in the skull.

Anteorbital Fenestra

An opening (fenestra) in the skull located in front of the orbit.

Lateral Temporal Fenestra

An opening in the skull located in the temporal region.

Dentary

A bone in the lower jaw of the skull.

Cervical Vertebrae

Vertebrae located in the neck region of the skeleton.

Dorsal Vertebrae

Vertebrae located in the back region of the skeleton.

Sacral Vertebrae

Vertebrae located in the pelvic region of the skeleton.

Caudal Vertebrae

Vertebrae located in the tail region of the skeleton.

Illium

A bone of the pelvic girdle.

Pubis

A bone of the pelvic girdle.

Ischium

A bone of the pelvic girdle.

Femur

The thigh bone of the hind limb.

Tibia

A bone in the lower portion of the hind limb.

Humerus

The upper bone of the forelimb.

Holocene

The current geologic epoch starting $0.012\,Ma$.

Pleistocene

A geologic epoch starting approximately $2.6\,Ma$.

Paleocene

A geologic epoch starting approximately $66\,Ma$, marking the beginning of the Cenozoic era.