evolution week 6
About this set
Created by:
jmo1507 on February 24, 2010
Subjects:
early primates, miocene hominoids (apes), african vs asian origin for hominins
Log in to favorite or report as inappropriate.
Order by
24 terms
Terms | Definitions |
|---|---|
 origin of primates | 65 Ma |
| Prosimians | lower primates. lemurs, tarsiers, loris (bush-babies) |
| simians | higher primates |
| strepsirhines | lower primates. prosimians, lemurs lorises |
| haplorhines | higher primates . A. platyrrhini (new world monkeys) B. Catarrhini (old world monkey & apes) 1. Cercopithecoidea (old world monkeys) 2. Hominoidea (apes) a. Hylbatidae (df) |
| Time scale | Holocene (recent) 10Ka, Uper/Later Pleistocene 125 Ka, Middle Pleistocene 790 Ka(origin of the primates), Lower/Earlier Pleistocene 1.8 Ma, Pliocene (origin homo) 5Ma, Miocene (origin homonids and homonoids (apes))23 Ma, Oligocene (Origin Haplorhines & Catarrhines?) Aegyptopithecus 38 Ma, Eocene (df, slide online!) http://lms.uconn.edu:80/webct/urw/ssinboundCAS.snWebCT.siURN:X-WEBCT-VISTA-V1:8dd26cf1-8963-1ae4-0185-6ec100232f70/cobaltMainFrame.dowebct?appforward=/webct/viewMyWebCT.dowebct&ticket=ST-15214-5YLnjRUWgncHCiqbxJbs9pmoqWjNxSEdfTb-20) |
| At least one early mammal ate dinosaurs! | repenomamus robustus with psittacosaur in the gut |
| The K-T Boundary | (K)Cretaceous-Tertiary 65Ma. End of the dinosaurs |
| Earliest primate fossil found | 55Ma |
| FADs & LADs | (first & last appearance data) How likely is it that you will find the fossil of the very first or very last member of a species? |
| Adapis | Early Strepsirhine. Primitive traits: Dental formula: 3.1.4.3. Body weight small: less than or equal to 7kg Derived traits: Nails, not Claws. expanded visual cortex. reduced olefactory bulb. 54 Ma (eocene) Orbit is ring of bone around eye. orbit faces front (stereoscopic). |
| Messel Shale Quarry, Germany | Ancient Lake Beds with volcanic ash. Date ~47Ma. "ida" from eocene may have lived here. |
| Ida (nickame) | Early strepsirhine. Bdy outline & impressions of fur preserved in lake mud. Remains of last meal (fruit & leaces in stomach cavity) had opposable thumb. scientific name = darwinius (df) |
| Quarry 'M', Fayum, Egypt | Aegyptopithecus found there. was once a dense tropical forest. |
| Aegyptopithecus | Haplorhine, Catarrhine. Dental formula: 2,1,2,3. 31-37 Ma. Oligocene. Orbit completely enclosed in bone. whole socket instead of just a ring. Arboreal, quadrepedal, less than or equal to 7 kg. Diet: fruit and leaves. reduced olfactory buld, increased visual cortex. Sexually dimorphic. Body size Males>females. Males: sagittal crest. Canines larger in males. |
| Family: hominidae | Gorillas, Chimps, Humans = subfamily: hominae |
| Family Pongidae | orangoutangs = subfamily: ponginae |
| Afropithicus | 21-17 Ma |
| Proconsul africanus | 19-16 Ma. found by louis and mary leaky. Quadrupedal, suspensory. |
| Apes teeth: | Large overlapping canines. creates Honing facet. Diastema (gap in tooth row where canines rest when animal has mouth shut). |
| Kenyapithecus: | A possible human ancestor? Reduced canine: Human like. Honinf facet & Diastema: Chimp like. |
| African Moicene Hominoids | Many Genera & species (unlike now) Diet & locomotion diverse. Quadrepedal & suspensory. Mostly fruit eating. Body size ~20-50 kg. Sexually dimorphic. No certainty which are ancestral to humans. |
| Dryopithecus Fontani | discovered in 1856, France |
| Ramapithecus Brevirostrus | Thought for many years to be a human ancestor. All Ramapithecus fossils are teeth & jaws. Supposed human features: Parabolic Dental arcade. Thick tooth enamel. |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.