Images from the NDSU 2003 Paleo field trip. For a larger image for your reports click on the thumbnail image

	Fossil pothole at Taylors Falls, Minnesota. Formed by meltwater from Glacial Lake Duluth. Downcutting exposed Late PreCambrian basalts . Mike Rudolph for scale.
	Fossil pothole at Taylors Falls about 25 feet deep eroded into Proterozoic basalt
	Contact between massive and vesicular texture in a basaltic lava flow. Aric Olsen for scale
	Vesicular basaltic lava
	Pahoehoe texture (1.1 Ga)
	Amygduloidal basalt
	Millstreet Conglomerate, Ironton Formation, Franconian Stage, Taylors Fall, Minnesota
	Crushed shells of inarticulate brachiopods attached to a boulder from the Cambrian conglomerate at Taylors Falls
	St. Croixian Series (Upper Cambrian) sandstone unconformably overlies basalts of the Chengwatana Group (Late Proterozoic). Reuben Panchol for scale.
	Franconian-aged (Upper Cambrian) sandstone at Curtain Falls, nr Taylors Falls, Minnesota. Aric Olsen for scale.
	St. Croixian Series inarticulate brachiopods from St. Croix Falls, Wisconsin
	Pygidium of the Upper Cambrian trilobite Uncaspis from the Eau Claire Formation, Willow River , Wisconsin
	Hyolithus from the Eau Claire Formation, Willow River , Wisconsin
	Trace fossils and ripple marks (crests are orange-brown) from the St. Lawrence Formation, Red Wing, Minnesoata
	Detail of trace fossils from the Upper Cambrian St. Lawrence Formation, Red Wing, Minnesota
	Red Wing fault - St. Lawrence Formation (yellow) against the Franconia Formation (green - glauconitic). Chad Weisenburger for scale.
	Slab of limestone covered in mostly orthid brachiopods from the Middle Ordovician Decorah Formation , Spring Grove, Minnesota
	Small Isotelus from the Maquoketa Formation, Upper Ordovician, nr. Granger, Minnesota . Specimen collected by Mike Wright.
	Bumastoides? from the Galena Group limestones, near Greenleafton, Minnesota. Specimen collected by A.C.A. about 15 years ago.
	Isotelus from a Decorah Formation limstone, Spring Grove, Minnesota. Specimen collected by A.C.A. 10 years ago
	Trilobite (Ceraurus?) embedded in a Stewartville Formation limestone, Greenleafton, Minnesota.
	Diplograptus from the Middle Ordovician Galena Group limestones, near Greenleafton, Minnesota
	Orthoconic nautiloid from the Platteville Limestone, near Spring Grove, Minnesota. Specimen collected by Jeff Suttle about 10 years ago (see scale for size)
	Section of an orthoconic nautiloid from the Platteville Formation, Middle Ordovician., near Spring Grovr, Minnesota
	Maclurites from the Middle Ordovician Galena Group limestones, near Wyckoff, Minnesota
	Fischerites - a receptaculid from the Middle Ordovician Galena Group limestones, near Greenleafton, Minnesota - surface view.
	Fischerites - a receptaculid from the Middle Ordovician Galena Group limestones, near Greenleafton, Minnesota - side view.
	Discontinuity in a Prosser Formation limestone (Galena Group), near Greenleafton, Minnesota
	Contact between the Lithograph City Formation and the lower stromatoporoid biostrome of the Shell Rock Formation. Upper Devonian limestones from Mason City , Iowa. Justin Costa-Rica for scale.
	Banded stromatoporoid from the Upper Devonian Shell Rock Formation, Mason City, Iowa.
	Styolites from the Upper Devonian Lithograph City Formation, Mason City, Iowa
	A working group of NDSU students
	A Reuben based on Reuben Panchol - an alternative to the English and metric systems?
	Roark Franklund - wet feet and all collecting in the Willow River
	Team A - Willow River State Park
	Team B - Willow River State Park
	Paleo Field Trip group 2003 on a St. Peters Sandstone outcrop.
	Geology 303 butts.
	Paleo Field Trip group in Rockford, Iowa.
	Allan Ashworth