Term
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Definition
Basal group of birds; earliest
-means "ancient jaw"
includes Tinamiformes, Rheiformes, Struthioniformes, Casuariiformes, Dinornithiformes |
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Term
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Definition
tinamous (1 family, 47 species)
South America |
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Term
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Definition
Rheiformes, Struthioniformes, Casuariiformes, Dinornithiformes
(polyphyletic) |
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Term
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Definition
rheas
1 family, 2 species
3 toes, fast runners
South America |
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Term
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Definition
ostriches
1 family, 1 species
2 toes, fast runners
largest living bird, both sexes of parents care for offspring |
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Term
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Definition
Emu & cassowaries
2 families, 4 species
Australo-Papuan (New Guinea) region
3 toes, colorful bony casque on head
kill people |
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Term
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Definition
Kiwis & extinct relatives
1 family, 3 species
Apterygiformes
New Zealand
nocturnal, lay eggs 15-20% of body mass |
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Term
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Definition
1) reduced keel (tinamous)
2) no keel & flightless (ratites)
3) lost ability to fly
4) sex chromosomes are same size & shape |
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Term
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Definition
| unique structure between nasal passages |
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Term
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Definition
Dinornithiformes
-giant flightless bird 20-250 kg
went extinct 400 ya
(only predator was Harpogornis moorei, N. Zealand eagle) |
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