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20 Cards in this Set

  • Front
  • Back
The oldest bird known and supports the phylogenetic relatedness of birds and reptiles
Monkeys and Apes
opposable thumbs
finger not common to any animal except anthropoids
H. neanderthalensis

Lived in Europe and Near East between 350,000 to 28,000 years ago

They were thick-boned with a larger brain, they buried their dead, and they made hunting tools

H. erectus
First hominin to leave Africa
H. sapiens

All living humans are descended from these African ancestors

Homo sapiens were the first group to show evidence of symbolic and sophisticated thought

Which extant chordates are postulated to be most like the earliest chordates in appearance?
What do all craniates have that earlier chordates did not have?
Partial or complete skull
Lampreys differ from hagfishes in?

They have cartilaginous segments surrounding the notochord and arching partly over the nerve cord, hagfishes don't

Digestive system with a single opening

Which of the following belongs to the lobe-fin clade?
Osteichthyans (bony fish and tetrapod's (human))

Why is the amniotic egg considered an important evolutionary breakthrough?

contains membranes that protect the embryo and allow the deposition of eggs in a terrestrial environment
Which of the following are the only extant animals that descended directly from dinosaurs?
Know the evolutionary relationship between humans and apes and between humans and other species of the genus Homo.

Different species of the genus Homo have coexisted at various times throughout hominin evolution

Bipedal locomotion (2 legs) was the first trait to appear as hominins diverged from other primates

Homo erectus originated in Africa by 1.8 million years ago

It was the first hominin to leave Africa

How old is the oldest fossil remains of Homo sapiens?
195,000 years ago in Africa


Vertebrates and tunicates share

a notochord and a dorsal, hollow nerve cord.
Living vertebrates can be divided into two major clades. Select the appropriate pair.
the cyclostomes and the gnathostomes (sponges that lack true tissue)
Unlike eutherians (fetus develop entirely inside an organism), both monotremes (lay eggs) and marsupials
have some embryonic development outside the uterus.
Which clade does not include humans?
As hominins diverged from other primates, which of the following appeared first?
bipedal locomotion
Which of the following could be considered the most recent common ancestor of living tetrapods?
a sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates