GY 112L: Earth History Lab
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1 UNIVERSITY OF SOUTH ALABAMA GY 112L: Earth History Lab Week 9: Paleozoic Part 3 Instructor: Dr. Douglas W. Haywick
2 Today s Agenda The Paleozoic Part 3 (Week 9 exercises) 1) Brachiopods 2) Molluscs 3) Alabama Stratigraphy
3 Brachiopoda Brachiopod Facts: Taxonomy: (under review) Phylum: Brachiopoda Class: Inarticulata Class: Articulata
4 Brachiopoda Brachiopod Facts: Taxonomy: Phylum: Brachiopoda Class: Inarticulata Class: Articulata Range: Cambrian-Recent (Inarticulates were first)
5 Brachiopoda Brachiopod Facts: Taxonomy: Phylum: Brachiopoda Class: Inarticulata Class: Articulata Range: Cambrian-Recent Mode of Life: Marine, benthic, filter feeder
6 Brachiopoda Brachiopod Facts: Taxonomy: Phylum: Brachiopoda Class: Inarticulata Class: Articulata Range: Cambrian-Recent Mode of Life: Marine, benthic, filter feeder Mineral composition: calcite, phosphate
7 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)
8 The Brachiopod Animal Inarticulates
9 The Brachiopod Animal Inarticulates
10 Brachiopod Symmetry Symmetrical across the valves (down the medial line)
11 Brachiopod Symmetry Symmetrical across the valves (down the medial line)
12 Brachiopod Symmetry Symmetrical across the valves (down the medial line) Articulate Brachiopods
13 Brachiopod Symmetry Symmetrical across the valves (down the medial line) Articulate Brachiopods
14 Brachiopod Symmetry Not symmetrical between the valves
15 Brachiopod Symmetry Not symmetrical between the valves Yes No
16 Mollusca (Mollusks) Taxonomy: Phylum: Mollusca Mollusk Facts:
17 Mollusca (Mollusks) Mollusk Facts: Taxonomy: Phylum: Mollusca Class: Amphineura Bivalvia Gastropoda Cephalopoda Order: Nautiloidea Ammonoidea Belemnoidea
18 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)
19 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
20 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
21 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
22 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
23 The Mollusk Animal Bivalves
24 The Mollusk Animal Gastropods
25 Bivalve Symmetry Symmetrical between the valves
26 Bivalve Symmetry Symmetrical between the valves Not across the valves
27 Bivalve vs Brachiopod Symmetry Bivalve: Symmetrical between the valves Brachiopod: Symmetrical across the valves
28 Bivalve Symmetry Beware Scallops and Oysters scallops look symmetrical across the valve but they are not oysters are not symmetrical at all
29 Alabama Stratigraphy and Rock Suites Collections of Paleozoic rocks from our fair state
30 Alabama Stratigraphy and Rock Suites Paleozoic rocks
31 Alabama Stratigraphy and Rock Suites Paleozoic rocks Bonus Question: Color Paleozoic rock outcrop areas
32 Alabama Stratigraphy and Rock Suites Rocks this week: a collection of specimens from northern Alabama (including Red Mountain) which is hematite (iron ore).
33 Lab Time
34 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.
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