Fossils
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| BIVALVES BRACHIAPODS BRYAZOA CASTS CEPHALOPODS CRINOIDS GASTROPODS HORN CORALS SPIRIFERS SPONGE CORALS TRILOBITES OTHER FOSSILS |
Fossils are the remains of animals and plants that died long ago. Their remains have been replaced by minerals and the resultant cast is called a fossil. Most of the time, the fossil is made of rock harder than the surrounding rock and so it survives. As the host rock erodes, the fossil weathers out and rolls away - often onto a beach or in a creek bed. Fossils are a great record of living things from a long time ago.Fossils are interesting to look at even if you don't know what they are called or when they were formed. Many fossils look similar to plants and animals that still live today.
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GASTROPOD FOSSIL wave action DESCRIPTION: This gray, snail-like fossil was buried underneath mud & sand when it died. The layers of mud turned into limestone. As the limestone along the beach was hit by the waves, the rock crumbled and the harder fossils fell onto the beach. The constant movement of the waves smoothed out the fossil as it rolled along the bottom of the water. It was being scrubbed by the sand & waves. ORIGIN: Presquile Provincial Park, Ontario |
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horn coral - Rugosa ORIGIN: Arkona, Ontario |
![]() Geodized fossils |
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| This fossil looks like a honeycomb. Sponge coral fossils exist because many years ago corals were covered in mud & sediment which turned into limestone. | |||
![]() SPONGE CORAL FOSSIL freeze / thaw
cycle ORIGIN: Manitoulin Island, Ontario |
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Crinoid fossils are so common in the
river gravel in Indiana, that you can find crinoid pieces in concrete. ORIGIN: Indiana, USA |
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favosite |
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| Fossils fro the Mara Quarry, Ontario | |||
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shark teeth |
Bryozoa |
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