EESB15H3 Lecture Notes - Lecture 18: Euramerica, Taconic Orogeny, Alleghanian Orogeny
11 Dec 2017
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Affected marine invertebrates, decreased the diversity of trilobites, brachiopods, bryozoans, rugose corals, stromatoporoids. Figure 1: the late paleozoic: devonian deposition environmental, mountain building, sea. Record is primarily in great volumes of sediment in the williston basin. Catskill clastic wedge: is a foreland basin filled with sediments. Shale is found in southern ontario as a result of the wedge. Activity in the maritime region of canada, Continuation of the mountain range causing continental collision between baltica and. Alluvial: fans built away from a fault where sediment travels by water. Found in the old red sandstone continent. Figure 7: devonian, the age of the fishes. Figure 8: lobe-fin fish and the earliest tetrapods. The late paleozoic times - carboniferous to permian: The invasion of the land by tetrapods required the development of the egg: Amniotic vertebrates have an enclosed egg so they can colonize land without the fear of desiccation (dehydration). Non-amniotic vertebrates needed water for external fertilization.
