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18 Cards in this Set
- Front
- Back
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8 Classes of Vertebrates, 7 living |
Agnatha - jawless fishes Placodermi - jawed armored fishes (extinct) Chondrichthyes - cartilaginous fishes Osteichthyes - bony fishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals |
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Nonvertebrates Chordate |
Have notochord but no backbone Ex: Lancelet Closely related to vertebrates |
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Invertebrate Chordate |
Notochord during development but replaced by Spinal column |
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Mammals & Birds are... |
Endothermic, 90% of energy goes to consume food |
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Vertebrates evolved from.. |
Fishes Swimbladder evolved to make bonyfish more successful |
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Amphibians |
Made evolution possible
Pulmonary Vein |
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Rise and Fall of Dominant Reptile Groups: |
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Reptiles.... |
Dominated the world 250 million years ago
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Birds (Aves)... |
Have feathers and are descendants of dinosaurs
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Mammals |
Possess two morphological structures
Hair and Mammary Glands |
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Osteichthyes (Bony fish) |
Majority of fish fall under this category
28,000 species |
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Chondrichthyes |
Have jaw, paired fins & scales Ex: Great White Shark Sub classes: 1. Elasmobranchii (Sharks & Rays) 2. Holocephali (Ghost Shark) |
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Hagfish (Marine Organism) |
Class Myximi (Hyperotreti) only class that doesnt belong to the Vertebrate phylum
Only organisms w/ skull --> No vertebral column |
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Placodermi (Jawed Armored Fish) |
Extinct
1st jawed fish Jaws evolved from Gill arches 380 Million year old fossil best presevation |
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Gnathostomata |
Have Jaws 60,000 species Adaptive Immune Sys |
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Map |
Dino dominated Explosion in Mexico, Darkened the planet No food became extinct 5 major extinctions |
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Juramaia |
1st org to resemble a Mammal 1st found in China (160 Mil years) Last living ancestor of placental animals |
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Conodonts |
Extinct Resembles eels Primitive, mineralized mouth |
