UNIVERSITY OF SOUTH ALABAMA
GY 112L: Earth History Lab
Lab Preamble:
Paleozoic Part 1
Instructor: Dr. Douglas W. Haywick
Today’s Agenda
The Paleozoic Part 1
1)
2)
3)
4)
Trilobites
Graptolites
Rock Suites
Lab test 2
Trilobites
One of Doug’s favorite
Beasties.
They come in a lot of shapes
and sizes…
www.mineraltown.com
Trilobites
One of Doug’s favorite
Beasties.
They come in a lot of shapes
and sizes…
Tricrepicephalus, Utah
www.mineraltown.com
http://hazen.ciw.edu/trilobites
Trilobites
And have been favorites of collectors for hundreds of years
Koneprussia, Devonian, Morocco
http://hazen.ciw.edu/trilobites
Trilobites
Basic information about trilobites and beasties in general
Trilobites
Trilobite Facts:
Taxonomy:
Phylum: Arthropoda
Sub-Phylum: Trilobita
Trilobites
Trilobite Facts:
Taxonomy:
Phylum: Arthropoda
Sub-Phylum: Trilobita
Range:
Cambrian-Permian/Triassic
(Pre-Cambrian?)
Trilobites
Trilobite Facts:
Taxonomy:
Phylum: Arthropoda
Sub-Phylum: Trilobita
Range:
Cambrian-Permian/Triassic
(Pre-Cambrian?)
Mode of Life: Marine, mostly benthic,
scavenger/predator
Trilobites
Trilobite Facts:
Taxonomy:
Phylum: Arthropoda
Sub-Phylum: Trilobita
Range:
Cambrian-Permian/Triassic
(Pre-Cambrian?)
Mode of Life: Marine, mostly benthic,
scavenger/predator
Mineral composition: calcite, chiton
http://www.paleodirect.com/trilobites.htm
Trilobites
Trilobite Facts:
Taxonomy:
Phylum: Arthropoda
Sub-Phylum: Trilobita
Range:
Cambrian-Permian/Triassic
(Pre-Cambrian?)
Mode of Life: Marine, mostly benthic,
scavenger/predator
Mineral composition: calcite, chiton
http://tucsonmineral.com/images/trilobites/trilobite_lg_bolivia.jpg
Fossil Pres.: pristine, molds, mineral
replacement
Trilobites
Lab Responsibilities:
1) Look at the fossils, answer questions
2) Draw the fossils
3) Add a scale
4) Label body parts
Head
Thorax
Tail
5 cm
Graptolites
A lesser known beastie…
…that also in a lot of shapes
http://media-2.web.britannica.com/eb-media/30/12330-004-905A0178.jpg
Graptolites
A lesser known beastie…
…that also in a lot of shapes
http://www.lapworth.bham.ac.uk/images/collections/palaeo/Didymograpt.JPG
Graptolites
Graptolite Facts:
Taxonomy:
Phylum: Hemichordata
Class: Graptolithinia
Order: Graptoloidea (graptoids)
Order Dendroidea (dendroids)
Graptolites
Graptolite Facts:
Taxonomy:
Phylum: Hemichordata
Class: Graptolithinia
Order: Graptoloidea (graptoids)
Order Dendroidea (dendroids)
Range:
Cambrian-Permian/Triassic
Graptolites
Graptolite Facts:
Taxonomy:
Phylum: Hemichordata
Class: Graptolithinia
Order: Graptoloidea (graptoids)
Order Dendroidea (dendroids)
Range:
Cambrian-Permian/Triassic
Mode of Life: Marine (colonial),
pelagic, filter feeders
Graptolites
Graptolite Facts:
Taxonomy:
Phylum: Hemichordata
Class: Graptolithinia
Order: Graptoloidea (graptoids)
Order Dendroidea (dendroids)
Range:
Cambrian-Permian/Triassic
Mode of Life: Marine (colonial),
pelagic, filter feeders
http://1.bp.blogspot.com/_VA6LePZ6KNY/Rx7SOa2rmeI/
Mineral composition: ?
Graptolites
Graptolite Facts:
Taxonomy:
Phylum: Hemichordata
Class: Graptolithinia
Order: Graptoloidea (graptoids)
Order Dendroidea (dendroids)
Range:
Cambrian-Permian/Triassic
Mode of Life: Marine (colonial),
pelagic, filter feeders
Mineral composition: ?
Fossil Pres.: impression, carbonization
http://www.lapworth.bham.ac.uk/images/collections/palaeo/Didymograpt.JPG
Rock Suites
Collections of rocks from a specific region that cover a specific time frame
1) Colorado Rock Suite (siliciclastic; beware granite and stratigraphy)
Rock Suites
Collections of rocks from a specific region that cover a specific time frame
1) Colorado Rock Suite (siliciclastic; beware granite and stratigraphy)
2) Western Canada Rock Suite (biochemical; beware dolomite/dolostone,
also has petroleum geology significance
Lab test 2 (Prep)
1) Sedimentary rock examination
SEDIMENTARY ROCKS TO BE FAMILIAR
WITH FOR THIS EXAM
Quartz arenite
lithic sandstone
arkose
greywacke
conglomerate
breccia
shale (red, black, green)
fossiliferous limestone
coquina
chalk
oolite
coal
amber
halite
For this exam: no siltstone, no non-fossiliferous
limestone,
Lab test 2
1) Sedimentary rock examination
2) Modes of fossil preservation
10-12 questions dealing with stations, 3 minutes per station, 3-4 writing question
Lab Time
GY 112L: Earth History
Lab 7: Paleozoic Rocks and Fossils 1
Instructor: Dr. Doug Haywick
dhaywick@southalabama.edu
This is a free open access lecture, but not for commercial purposes.
For personal use only.