s s l l i i s s s s o o F F

n n a a g g i i h h c c i i M M

A2 - BRACHIOPOD, B2 - CRINOID pieces, A1 - BRACHIOPOD, B1 - CORAL or CHAIN invertebrate - invertebrate - invertebrate - CORAL, invertebrate - Mucrospifier profundus - Megistocrinus sp. ? - Pentamerus sp. - Cordell Halysites sp. - Cordell Silica formation - Alpena limestone - dolomite - Silurian age - dolomite - Silurian age - Devonian age - Devonian age - Alpena Chippewa Co. - 65 mm, Chippewa Co. - 110 mm, Washtenaw Co. - 50 mm, Co. - 30 mm (lower right) internal cast or steinkern siliceous replacement - calcite replacement - R. , calcite replacement - - R. Elowski R. Milstein Milstein GSD

B4 - CORAL or A4 - CORAL or B3 - SNAIL or COLONIAL CORAL A3 - TRILOBITE, COLONIAL CORAL, GASTROPOD, Petoskey Stone, invertebrate - Phacops invertebrate - invertebrate - genus not invertebrate -

rana - Silica formation - Syringopora sp. - Cordell determined - Cordell Hexagonaria percarinata Devonian age - dolomite - Silurian age - dolomite - Silurian age - - Alpena Limestone - Washtenaw Co. - 70 mm, s

Chippewa Co. - 125 mm, s Chippewa Co. - 75 mm, Devonian age - calcite replacement - S.

siliceous replacement - l internal cast or steinkern Charlevoix Co. - 200 mm, Wilson l R. Milstein - GSD calcite replacement - R. i i Milstein s s D1 - BANDED IRON C1 - MASTODON Tooth, C2 - EUCARYOTIC algae FORMATION (BIF), from D2 - PLANT root section, s vertebrate - Mammut filaments, plant - s fossils - result of plant - Stigmaria, genus americanum - Glacial Grypania spiralis - Grypania and others - not determined - Saginaw deposit - Quaternary age Negaunee Iron Formation Banded Iron Formation - Formation - o - 200 mm long, the - Precambrian age - o Precambrian age - Pennsylvanian age - “Michigan State Fossil” - Marquette Co. - large Marquette Co. - 600 mm, Eaton Co. - 150 mm in

Central Michigan loop about 20 mm , F from the rock walkway at diameter, internal cast - F University Rowe Museum oldest macrofossil - GSD the - Eddy Discovery T. Godbold

Center n n C3 - FISH plate, D3 - Kona Dolomite, plant D4 - ALGAL stromatolite, a

vertebrate - genus not a - Algal in origin - Kona plant - Collenia undosa - determined - Alpena C4 - Septarian nodule - Formation - Precambrian Copper Harbor Limestone - Devonian pseudo fossil - - Ottawa g

g age - Marquette Co. - 150 Conglomerate - age - Alpena Co. - 200 Co. - 75 mm, Looks like a by 200 mm, Precambrian age, 1,100 - i mm at widest point, fossil, it is not. - S. Wilson i metamorphosed to a Keweenawan Co. - 100 calcite replacement - S. marble - GSD mm, - S. Wilson Wilson h h c c i

E2 - CORAL or i F1 - BRYOZOAN, F2 - CLAM or E1 - CRINOID, COLONIAL CORAL, invertebrate - PELECYPOD, invertebrate - invertebrate - Favosites Sulcoretepora deissi - invertebrate - Megalomus Megistocrinus concava - sp. - Alpena Limestone - Silica formation - canadensis - Cordell Thunder Bay limestone - M

Devonian age - M Devonian age - dolomite - Silurian age - Devonian age - Alpena Charlevoix Co. - 100 mm Washtenaw Co. - 25 mm, Chippewa Co. - 60 x 75 Co. - 30 mm, calcite (shown), siliceous calcite replacement - S. mm, internal cast or replacement - S. Wilson replacement - R. Reszka Wilson steinkern - GSD

E3 - BRACHIOPOD, E4 - CEPHALOPOD, F3 - CORAL or F4 - STROMATOPOROID, invertebrate - invertebrate - COLONIAL CORAL, invertebrate - genus not Mucrospifler mucronatus Michelinoceras sp. - invertebrate - Favosites determined - Alpena - Silica formation - Ogontz limestone - sp. - Cordell dolomite - Limestone - Devonian Devonian age - Ordovician age - Alger Silurian age - Chippewa age - Charlevoix Co. - Washtenaw Co. - 90 mm, Co. - 100 mm, internal Co. - 70 mm, siliceous 125 mm, calcite calcite replacement - R. cast or steinkern - R. replacement - GSD replacement - GSD Milstein Milstein