UNIVERSITY OF SOUTH ALABAMA GY 112L: Earth History Lab Week 9: Paleozoic Part 3 Instructor: Dr. Douglas W. Haywick
Today s Agenda The Paleozoic Part 3 (Week 9 exercises) 1) Brachiopods 2) Molluscs 3) Alabama Stratigraphy
Brachiopoda Brachiopod Facts: Taxonomy: (under review) Phylum: Brachiopoda Class: Inarticulata Class: Articulata
Brachiopoda Brachiopod Facts: Taxonomy: Phylum: Brachiopoda Class: Inarticulata Class: Articulata Range: Cambrian-Recent (Inarticulates were first)
Brachiopoda Brachiopod Facts: Taxonomy: Phylum: Brachiopoda Class: Inarticulata Class: Articulata Range: Cambrian-Recent Mode of Life: Marine, benthic, filter feeder
Brachiopoda Brachiopod Facts: Taxonomy: Phylum: Brachiopoda Class: Inarticulata Class: Articulata Range: Cambrian-Recent Mode of Life: Marine, benthic, filter feeder Mineral composition: calcite, phosphate
Brachiopoda Brachiopod Facts: Taxonomy: Phylum: Brachiopoda Class: Inarticulata Class: Articulata Range: Cambrian-Recent Mode of Life: Marine, benthic, filter feeder Mineral composition: calcite, phosphate Fossil Pres.: pristine (sometimes external molds)
The Brachiopod Animal Inarticulates
The Brachiopod Animal Inarticulates
Brachiopod Symmetry Symmetrical across the valves (down the medial line)
Brachiopod Symmetry Symmetrical across the valves (down the medial line)
Brachiopod Symmetry Symmetrical across the valves (down the medial line) Articulate Brachiopods
Brachiopod Symmetry Symmetrical across the valves (down the medial line) Articulate Brachiopods
Brachiopod Symmetry Not symmetrical between the valves
Brachiopod Symmetry Not symmetrical between the valves Yes No
Mollusca (Mollusks) Taxonomy: Phylum: Mollusca Mollusk Facts:
Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Amphineura Bivalvia Gastropoda Cephalopoda Order: Nautiloidea Ammonoidea Belemnoidea
Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Amphineura Bivalvia Gastropoda Cephalopoda Order: Nautiloidea Ammonoidea Belemnoidea Range: Gastropoda (Cambrian-Recent) Bivalvia (Cambrian-Recent) Cephalopoda (Cambrian-Recent)
Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Bivalvia Gastropoda Range: Gastropoda (Cambrian-Recent) Bivalvia (Cambrian-Recent) Mode of Life: Marine, non-marine, terrestrial, filter feeder, scavenger, predators
Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Bivalvia Gastropoda Range: Gastropoda (Cambrian-Recent) Bivalvia (Cambrian-Recent) Mode of Life: Marine, non-marine, terrestrial, filter feeder, scavenger, predators
Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Bivalvia Gastropoda Range: Gastropoda (Cambrian-Recent) Bivalvia (Cambrian-Recent) Mode of Life: Marine, non-marine, terrestrial, filter feeder, scavenger, predators Mineral composition: calcite, aragonite
Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Bivalvia Gastropoda Range: Gastropoda (Cambrian-Recent) Bivalvia (Cambrian-Recent) Mode of Life: Marine, non-marine, terrestrial, filter feeder, scavenger, predators Mineral composition: calcite, aragonite Fossil Pres.: pristine. molds, casts, chalky
The Mollusk Animal Bivalves
The Mollusk Animal Gastropods
Bivalve Symmetry Symmetrical between the valves
Bivalve Symmetry Symmetrical between the valves Not across the valves
Bivalve vs Brachiopod Symmetry Bivalve: Symmetrical between the valves Brachiopod: Symmetrical across the valves
Bivalve Symmetry Beware Scallops and Oysters scallops look symmetrical across the valve but they are not oysters are not symmetrical at all
Alabama Stratigraphy and Rock Suites Collections of Paleozoic rocks from our fair state
Alabama Stratigraphy and Rock Suites Paleozoic rocks
Alabama Stratigraphy and Rock Suites Paleozoic rocks Bonus Question: Color Paleozoic rock outcrop areas
Alabama Stratigraphy and Rock Suites Rocks this week: a collection of specimens from northern Alabama (including Red Mountain) which is hematite (iron ore).
Lab Time
GY 112L: Earth History Lab Week 9: Paleozoic Part 3 Instructor: Dr. Doug Haywick dhaywick@southalabama.edu This is a free open access lecture, but not for commercial purposes. For personal use only.