Sedimentary Rocks
Wentworth.gif; Hjulstrom.jpg

Metamorphic Rocks
Ridge_vent.tiff; Shock_metam.jpg; AFM.jpg; ACF.jpg; Porphyroblast_comp.gif

Bio- and Chronostratigraphy
Geo 221_13 copy.pdf

Geologic Time
Geo 221_14 copy.pdf

Origin of Life
Geo 221_15 copy.pdf

Fossil Record: Invertebrates, part 1
Geo 221_16 copy.pdf

Fossil Record: Invertebrates, part 2
Geo 221_17 copy.pdf; Ammonoid_sutures.jpg

Fossil Record: Invertebrates, part 3
Geo 221_18 copy.pdf; Trilobite_classification.jpg

Fossil Record: Invertebrates, part 4
Geo 221_19 copy.pdf; Echinodermata_annot.jpg