1 Ch. 9: Marine Reptiles, Birds, & Mammals Marine Reptiles.
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1 Ch. 9: Marine Reptiles, Birds, & Mammals Marine Reptiles
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Transcript of 1 Ch. 9: Marine Reptiles, Birds, & Mammals Marine Reptiles.
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Ch. 9: Marine Reptiles, Birds, & Mammals
Marine Reptiles
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I) Origins
A) Vertebrates invaded land ~350 MYA1) Evolved from fish-like
ancestors with lungs & two pairs of limbsa) Tetrapods: four-footed
B) Descendants include classes Amphibia, Reptilia, Aves, & Mammalia
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II) Marine Reptiles
A) Class Reptilia includes ~7,000 lizards, snakes, turtles, & crocodiles
B) Dry skin covered with scales to prevent H2O loss
C) Poikilotherms & ectotherms1) Cold-blooded
D) Descendents also include birds & mammals
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III) Sea Turtles
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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III) Sea Turtles
A) Order TestudinaeB) Reptiles with bodies
enclosed in a carapace (armor-like shell) fused to backbone
C) Legs modified into flippersD) All return to land to lay
eggs, but breed at sea1) Females return to beach they
were born
E) Eight species1) Family Cheloniidae
a) Black, Green, Flatback, Hawksbill, Kemps Ridley, Loggerhead, Olive Ridley
2) Family Dermochelyidaea) Leatherback
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IV) Other Marine Reptiles
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IV) Other Marine Reptiles
A) Order Squamata1) Sea Snakes
a) Highly poisonous; related to cobras
b) Dorsoventrally flattened
c) Ovoviviparous
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IV) Other Marine Reptiles
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IV) Other Marine Reptiles
A) Order Squamata2) Marine Iguanas
a) Pacific coast of South America
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IV) Other Marine Reptiles
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IV) Other Marine Reptiles
B) Order Crocodilia1) Saltwater crocodiles
2) Mangrove swamps of Eastern Indian Ocean, Australia, & some Pacific islands
3) Most aggressive of all marine animals
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