marine mammals 1

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Last updated 2:22 AM on 10/1/26
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7 Terms

1
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cetaceans divided up into two sub orders:

Odontocetes (tooth whales) and mysticetes (baleen whales)

2
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74 species of odontocetes and defining characteristics are:

has teeth instead of baleen

single blow hole

asymmetrical skull

echolocation

3
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14 specie of mysticetes and defining characterstics are:

baleen instead of teeth

two blow holes

symmetrical skull

no echolocation

low jaw articulate (jaw can drop low to swallow lots prey)ba

4
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balaenopteridaes contains 8 species

5
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5 groups of marine mammal

cetaceans (whales dolphins) sirenians (manatees) pinnipeds (seals, sea lion, walrus) sea otter, and polar bear

6
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features unique to mammals

3 ear ossicles

7
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all mammals have..

7 cervical vertebrae