'Early reptiles' diaporamas de présentation

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????????????. ????? Reptilia?. THE REPTILES PHYLUM CHORDATA CLASS REPTILIA. Repti1es are the first truly terrestrial vertebrates.

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Overview of natural history

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Origin and Evolution of Reptiles

Origin and Evolution of Reptiles. Introduction. Introduction. From studies of fossils and comparative anatomy, zoologists infer that reptiles arose from amphibians. The oldest known fossils of reptiles are about 350 million-years-old.

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Reptiles, Mammals, and Birds

Reptiles, Mammals, and Birds. Reptiles, Birds, & Mammals. Amphibians. ~400 MYA. Early Reptiles: Reptilomorphs. The earliest ancestors of reptiles are reptile-like amphibians. Remember: what is THE defining characteristic of an amphibian?

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Early Anthropods

Early Anthropods. Anthropods emerge from sea Preadapted- possessions of adaptations usable for life on land by chance ie- exoskeletons- waterproof Breathing- development of tracheae (small tubes with adjustable holes in the exoskeleton for air)

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Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

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