UNIVERSITY OF SOUTH ALABAMA GY 112L: Earth History Lab Mesozoic Part 2 Instructor: Dr. Douglas W. Haywick Today’s Agenda The Mesozoic Part 2 1) Mollusks (Cephalopods) 2) Echinoderms 3) Alabama Stratigraphy (surface rocks) Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Amphineura Bivalvia Gastropoda Cephalopoda Order: Nautiloidea Ammonoidea Belemnoidea Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Cephalopoda Order: Nautiloidea Ammonoidea Belemnoidea http://www.aquariumofpacific.org/images/olc/nautilusj.baecker_berlin_zoo_aquarium_pd600.jpg Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Cephalopoda Order: Nautiloidea Ammonoidea Belemnoidea Range: Nautiloidea (Cambrian-Recent) Ammonoidea (D-K/T) Belemnoidea (M-T) Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Cephalopoda Range: Nautiloidea (Cambrian-Recent) Ammonoidea (D-K/T) Belemnoidea (M-T) Mode of Life: Marine, pelagic, predators Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Cephalopoda Range: Nautiloidea (Cambrian-Recent) Ammonoidea (D-K/T) Belemnoidea (M-T) Mode of Life: Marine, predators Mineral composition: aragonite www.rubybluejewelry.com Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Cephalopoda Range: Nautiloidea (Cambrian-Recent) Ammonoidea (D-K/T) Belemnoidea (M-T) Mode of Life: Marine, predators Mineral composition: aragonite Fossil Pres.: pristine. molds, casts, chalky http://www.geofossiles.com/image_4667.jpg The Mollusk Animal Nautiloids/Ammonites http://www.tonmo.com/images/content/ammonite-fig7.jpg The Mollusk Animal Belemnites http://www.ucmp.berkeley.edu/images/taxa/inverts/belemnite_anatomy.gif Cephalopod Symmetry Cephalopod Symmetry http://higheredbcs.wiley.com/legacy/college/levin/0471697435/chap_tut/images/nw0258ann.jpg Cephalopod Symmetry Echinoderms Echinoderm Facts: Taxonomy: Phylum: Echinodermata Echinoderms Echinoderm Facts: Taxonomy: Phylum: Echinodermata Class: Crinoidea Cystoidea Blastoidea Echinodea Asteroidea Echinoderms Echinoderm Facts: Taxonomy: Phylum: Echinodermata Class: Crinoidea Cystoidea Blastoidea Echinodea Asteroidea Range: NeoProterozoic-Recent http://www.ucmp.berkeley.edu/echinodermata/crinoid6.gif Echinoderms Echinoderm Facts: Taxonomy: Phylum: Echinodermata Class: Crinoidea Cystoidea Blastoidea Echinodea Asteroidea Range: NeoProterozoic-Recent Mode of Life: Marine, benthic, scavengers, filter feeders, predators http://www.oceanben.com/expeditions/hi0701/Crinoid.jpg Echinoderms Echinoderm Facts: Taxonomy: Phylum: Echinodermata Class: Crinoidea Cystoidea Blastoidea Echinodea Asteroidea Range: NeoProterozoic-Recent Mode of Life: Marine, scavengers, filter feeders, predators Mineral composition: calcite Echinoderms Echinoderm Facts: Taxonomy: Phylum: Echinodermata Class: Crinoidea Cystoidea Blastoidea Echinodea Asteroidea Range: NeoProterozoic-Recent Mode of Life: Marine, scavengers, filter feeders, predators Mineral composition: calcite Fossil Pres.: pristine +/-Chalky The Echinoderm Animals Crinoids http://palaeo.gly.bris.ac.uk/Palaeofiles/Fossilgroups/Crinoidea/crinoidreal.jpg The Echinoderm Animals Blastoids http://www.indiana.edu/~librcsd/etext/hoosier/image/pa-10.jpg The Echinoderm Animals Sea Stars http://www.sms.si.edu/irlfieldguide/SeastarBiol.htm http://grhughes.hughesmordt.com/Artwork/thumbs/CrownThorns.jpg The Echinoderm Animals Sand dollars/Sea Biscuits http://www.geo.lsa.umich.edu/~kacey/ugrad/3-pht--echB.GIF Alabama Stratigraphy and Rock Suites Collections of Mesozoic surface rocks from our fair state Alabama Stratigraphy and Rocks Mesozoic surface rocks (Cretaceous) Mesozoic Sedimentation Cretaceous •Southern rifting in the Atlantic Ocean •Gulf of Mexico stops opening Mesozoic Sedimentation Cretaceous •Southern rifting in the Atlantic Ocean •Gulf of Mexico stops opening •AL Coastal Plain sedimentation Mesozoic Sedimentation North South Only key formations are labeled (those discussed in GY 112) Lab Time GY 112L: Earth History Lab 11: Mesozoic Part 2 Instructor: Dr. Doug Haywick [email protected] This is a free open access lecture, but not for commercial purposes. For personal use only. .