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Flashcards in Chapter 6 Deck (17)
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1

Principle of Superposition

Sedimentary ayers at the bottom are older than sedimentary layers at the top

2

Fossil Taphonomy

The study of decaying organisms over time and how they may become fossilized

3

Paleocene Epoch

-Adaptive radiation of Plesiadapiformes
-65 to 56 million years ago

4

Eocene Epoch

-Emergence of Euprimates (true primates) in Europe, Africa, Asia, and North America (adaptive radiation)
-56 to 35 million years ago

5

Plesiadapiformes

archaic primates which may have one lineage that eventually accumulates evolutionary changes that we recognize as primate characteristics.

6

Adapoids

-Aboreal, have nails, grasping feet, and post-orbital bar
-Strepsirhine lineage
-Eocene Period

7

Omomyoids

-Nocturnal, aboreal leaping niche
-Tarsier lineage
-Eocene period

8

Simiiform anthropoids

-Fossils found in Africa, Asia, Europe
-Mid Eocene

9

Oligocene

-35 to 23 million years ago
-adaptive radiation of simiiform anthropoids in both the Old and New Worlds occurred.
-Ancestors of fossil monkeys

10

Aegyptopithecus

-Fossil of old world monkey found in Fayum, Egypt
-Oligocene Period

11

Miocene

-23 to 5 million years ago
-Adaptive radiation of the hominoids
-First definite Old World Monkeys

12

Proconsul

-Oldest known hominoid
-Y-5 molar cusp pattern
-Called "dental apes" because they do not have the brachiator anatomy of later hominoids.

13

Homiothermy

Ability to generate and regulate internal body temperature

14

Heterodontism

Having different types of teeth

15

Lactation

Internal production of a nutrient-rich milk by the fmale to feed young offspring

16

Internal Gestation

Rentention of the fetus inside the body of the female through the course of its prenatal development

17

Traits Unique to Mammals

Homiohtermy, herodontism, lactation, internal gestation