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Laggerstatten

Laggerstatten. defined. Soft parts. Classic Examples. Ediacara when: Neoprot where: Ediacara SA Mistaken Pt. Newf Namibia how: v. shallow marine impressions in well sorted sandstone what: earliest metazoans

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Laggerstatten

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  1. Laggerstatten defined Soft parts Classic Examples Ediacara when: Neoprot where: Ediacara SA Mistaken Pt. Newf Namibia how: v. shallow marine impressions in well sorted sandstone what: earliest metazoans Vendian fauna Cnidaria, Protoarthropods? Delicate hard parts Abundance Diversity Importance Firsts anatomy & functionl morph. phylogeny

  2. Laggerstatten Classic Examples Gun Flint Chert when: Archean where: Canada how: marine siliceous ooze altered to chert what: single cell, prokaryotes

  3. Laggerstatten Classic Examples • Burgess Shale • when: Middle Cambrian • where: Banf BC • how: shelf edge slump into • deep anoxic basin • hard & soft tissue replaced by pyrite • what: great diversity • most phyla represented • great diversity & disparity

  4. Laggerstatten Classic Examples • Xiang Chen • when: Early Cambrian • where: Central china • how: shelf edge slump into • deep anoxic basin • hard & soft tissue replaced by pyrite • what: great diversity • first occurrence of many groups • great diversity & disparity • Embyos

  5. Laggerstatten Classic Examples Hunsruck Shale when: Devonian where: Germany how: deep anoxic basin hard & soft tissue replaced by pyrite what: Echinoderms Other

  6. Laggerstatten Classic Examples Mazon Creek when: Pennsylvanian where: Illinois how: siderite nodules in shale formed around individuals molds/replacement/carbonization what: Estuary to shallow marine plants, inverts., high diversity tully monster

  7. Laggerstatten Classic Examples Solenhofen Limestone when: Jurassic where: Germany how: v. shallow marine, hyper saline detailed molds replacement by ? what: Terrestrial to shallow marine plants, inverts., high diversity archaeopteryx

  8. Laggerstatten Classic Examples Green River & Florissant when: Eocene where: Co, Ut, Wy how: anoxic lake sediments v. detailed molds replacement by silica what: Terrestrial and fresh water fish! plants! insects!

  9. Laggerstatten Classic Examples Baltic Amber, Dominican Amber when: where: Co, Ut, Wy how: tree sap what: Terrestrial invert & vert. plants insects

  10. Laggerstatten Classic Examples LaBrea Tar Pits when: Pleistocene where: down town LA how: encased in petroleum seep what: Terrestrial vert. saber tooth tiger insects

  11. Laggerstatten Classic Examples Future? Gray Fossil Site when: Miocene where: Gray TN how: sink hole anoxic lake unaltered, & replaced what: Terrestrial vert. invert. great abundance

  12. Laggerstatten Many Small scale but v. impt. Examples “Fame” if you recognize one. Small deposit within a single quarry: Cambrian - Kangroo Island Silurian - Wakashaw Wisconsin Pennsylvanian - Humboldt Kansas

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