1 / 13

400 MILLION, BC: a 45 minute field trip to a Silurian sea floor

400 MILLION, BC: a 45 minute field trip to a Silurian sea floor. You are. . . . running a high-end paleo-tourism business, and you need a hot new beach destination for the next vacation season You need to figure out if this place is the next Padre Island, or a lawsuit waiting to happen.

dennis-mcclain
Télécharger la présentation

400 MILLION, BC: a 45 minute field trip to a Silurian sea floor

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 400 MILLION, BC: a 45 minute field trip to a Silurian sea floor

  2. You are . . . • . . . running a high-end paleo-tourism business, and you need a hot new beach destination for the next vacation season • You need to figure out if this place is the next Padre Island, or a lawsuit waiting to happen . . .

  3. Before you is . . . • . . . . a piece of a Silurian sea floor from Anticosti Island, Canada Your task is . . . • . . . figure out what the environment it is from . . . And whether or not your time-travel beach vacation will be a . . .

  4. Scenic Dangerous Lame

  5. Coral • A member of the Cnidaria • Individual polys feeding with tenticles • Live either solitarily (horn corals) or colonially (reefs) • Make skeletons out of calcium carbonate

  6. Crinoids • A member of the Echinodermata • Attached to the seafloor, with a stalk and arms that filter-feed • Skeleton made of calcium carbonate, often breaks down into the constituent ‘bits’ • Also called sea lilies

  7. Brachiopods • A member of the Brachiopoda • Look like a mollusc, but have a plane of symmetry THROUGH the shells, not between them • Shell made of calcium carbonate

  8. Trilobites • A member of the Arthropoda • Exoskeleton of calcium carbonate • Made up of a head, tail and segments • Had a set of legs on each segment, but the legs are very rarely preserved

  9. Bryozoans • Tiny colonial critters • Live in branch-like or twig-like colonies • Skelton of calcium carbonate • Holes on the ‘twigs’ typically >1mm across

  10. Gastropods (Snails) • Member of the Mollusca • Curly shells of calcium carbonate, housing a soft-bodied critter

More Related