more than 500 million years of IIle MM.Bl0 B. trilobites C. archeocyathids D. in

Question

more than 500 million years of IIle MM.Bl0 B. trilobites C. archeocyathids D. inarticulate brachiopods A. volcanic ash beds 18. What is special about the Burgess Shale in Canada? C. remarkable preservation of soft-bodied organisms B. phosphate rich D. first dinosaurs 19. One of the distinctive fossils of the late Paleozoic is a group of single-celled organisms that built football-shaped skeletons of calcite, the: A. fusulinids B. arthrodires C. archeocyathids D. midi-chlorians 20. The best record of late Permian therapsids is found around the: A. Appalachians D. Michigan basin B. Canadian shield C. Urals II Answer each of the following questions. Use diagrams as needed or helpful. Late Cambrian trilobites in eastern Massachusetts are completely different from the trilobite fauna of the same age in western Massachusetts. The same 2 trilobite faunas are found in eastern and western Newfoundland and in northern and southern Scandinavia. Explain how this came to be. (10) 1. What were the Ancestral Rockies or Paleorockies? When and where did they form and what is the evidence that they existed? 2. 3. When does the earliest record of terrestrial organisms occur in the fossil record? What kinds of organisms are they?

Explanation / Answer

18) C. Remarkable preservation of soft bodied organisms

Note: Actually only the hard parts of species like shells or bones will be preserved.But what is special about Burgess Shale in Canada is the  preservation of soft bodied organisms.

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