ISB 3-22-2011 - Tiny thin needle-like bones rather than...

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16:51 What Phylum and Subphylum do we belong to? Phylum- Chordates/chordata Subphylum- Vertebrae/vertebrata What is the age of the oldest known fossil chordate? Ediacaran Period Which two phyla possess a Pharynx? Hemicordates Cordates What is the age and country of origin of the oldest known vertebrates? China What is the age of the oldest known jawed fish? What is the age of the oldest known shark? What are the two types of boney fish? Lobe Fins Ray Fins
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Unformatted text preview: Tiny thin needle-like bones rather than thick bones in the middle. What is the age of the oldest known tetrapod? Acanthostegahas 8 fingers rather than 5 Diff between Lobe Fin fish, and Tetrapod = Tetrapods have legs Toes must develop at the end of the leg Some othe oldest known tetrapods have 5 toes. Amphibian egg must be laid in water. Soft permeable shells. Diapsid evolved into all reptiles and bird. 16:51 16:51...
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ISB 3-22-2011 - Tiny thin needle-like bones rather than...

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