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Early+Mesozoic[1] - Mesozoic Era Triassic and Jurassic...

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Mesozoic Era
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145 Million years 202 Million years 251 Million years Triassic and Jurassic Periods
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Early Mesozoic Bounded by mass extinctions Recovery from Permian mass extinction of: Lacy bryozoans Rugose corals (horn coral) Trilobites
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Early Mesozoic Life Mollusks are abundant Ammonoids 2 genera diversity to 100 Stromatolites returned to shallow water Bivalves abundant Sea urchins
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Early Mesozoic Life Reefs Hexacorals Dominant reef builder Some resemble rugose corals
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Early Mesozoic Life Belemnoids Squid-like relatives of Ammonoids Ammonoids were important guide fossils
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Early Mesozoic Life Fish - More modern - Scales covered bodies - Skeletons of cartilage - Simple Jaws - Peg-like teeth
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Early Mesozoic Life Marine reptiles Placodonts Blunt-toothed shell crushers Broad armored bodies
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Early Mesozoic Life Marine reptiles Nothosaurs Early Triassic May be first marine reptiles
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Early Mesozoic Life Plesiosaurs Evolved from nothosaurs Possible Loch Ness Monster???
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Early Mesozoic Life Ichthyosaurs Fish lizards Bore live young
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Early Mesozoic Life on Land Tree-forming Gymnosperms
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Early Mesozoic Life on Land Mesozoic forests looked very different from modern forests
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