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Module 1: Evolución humana

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Evolución humana

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Biology - Human evolution

Human evolution

Humans have been classified by taxonomists according to the following
taxonomic groupings:

TAXONOMIC GROUP
NAME OF GROUP
CHARACTERISTICS COMMON TO THE GROUP

Kingdom
Animalia
Heterophic
Cells lack cell walls

Phylum
Chordata
Dorsal nerve cord

Sub-phylum
Vertebrate
Backbone

Class
Mammalia
Mammary glands
Hair or fur

Order
Primate (E.g.. Lemurs, tarsiers, New World monkeys, Old World monkeys,
apes, chimpanzees)
Forward-directed eyes; stereoscopic vision
Grasping hand with opposable thumb (some with opposable toes).
Flat nails (not claws).
2 nipples
Large brain compared with body size
3 bones in the middle ear.
Typically have 4 upper and 4 lower incisors.

Sub-order
Anthropoid (monkeys, apes, humans)
Grasping hands and feet
Well developed eyesight; most have colour vision
Reduced sense of smell

Family
Hominid (hominoids= apes and humans)
No tail
Upright gait
Arms shorter than legs

Genus
Homo
Foramen magnum directed downwards.
Bipedal.
Flat face.
Large skull capacity
Development of tool technology, culture

Species
Homo sapiens sapiens
Very large cerebral cortex
Huge capacity to learn, increased mental ability, rational thought
Well developed speech
Culture

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