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.