See Also: auricular appendix(medicine)
Oligocene(dictionary)
oligocene(medicine)
Oligocene Epoch(encyclopedia)
Appendix(health)
appendix(dictionary)
appendix(dictionary)
appendix(encyclopedia)
Appendix(medicine)
Appendix rupture(health)

Oligocene Epoch (sh) and auricular appendix (medicine)


Oligocene Epoch (sh)




Major division of the Tertiary Period, from งใ 33.

7 to 23.8 million years ago. It follows the Eocene Epoch and precedes the Miocene Epoch. The term (from the Greek for "few recent forms") refers to the small number of modern animals that originated during this epoch. Oligocene climates appear to have been temperate, and many regions were nearly tropical. Grasslands expanded, and forested regions dwindled. The vertebrates of the northern continents had an essentially modern aspect that is a result less of the appearance of new forms than of the extinction of archaic vertebrates at the close of the Eocene.


auricular appendix (medicine)


auricular appendix -->
auricle of atrium


A small conical ("ear-shaped") pouch projecting from the upper anterior portion of each atrium of the heart, increasing slightly the atrial volume.

See: auricle of left atrium, auricle of right atrium.

Synonym: auricula atrialis, atrial auricle, atrial auricula, auricle, auricula, auricular appendage, auricular appendix, skin tag.