UNIVERSITY OF SOUTH ALABAMA. GY 112L: Earth History Lab. Mesozoic Part 2. Instructor: Dr. Douglas W. Haywick

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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 http://www.geofossiles.com/image_4667.jpg Fossil Pres.: pristine. molds, casts, chalky

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 dhaywick@southalabama.edu This is a free open access lecture, but not for commercial purposes. For personal use only.

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