Rhacolepis
Imprint of a fish from a past geologic age preserved in a rock nodule. The nodule was split in two, exposing half of the fish fossil. a. denotes head region; b.caudal fin; c.nodule of rock.
Rhacolepis
In this nodule of rock, 3 fossilized fish can be seen, denoted as a. head region of a fossil fish; b. caudal region of a fossil fish; c. a fossilized fish; d. two-thirds of a fossilized fish.
Rhinobatus
Fossilized cartilaginous fish. Note the detail of this fossilized ray. a. denotes the neurocranium; b. denotes the "wing-like" pectoral fin; c. denotes the vertebral column.
Tharrhias
Fossilized bony fish. The three arrows point out the head region; the dorsal fin; and the caudal fin.
Tharrhias
Fossilized fish preserved in a rock nodule. The nodule was split in two, exposing both halves of the fish. Note: a.skull bones of the head; b.dorsal fin rays; c.caudal fin; d. nodule of rock; and e. the other half of the nodule.
Vinctifer comptoni
Imprint of a fish from a past geologic age preserved in a rock nodule. The nodule was split in two, exposing both halves of the fish fossil. a. denotes upper jaw, b. scutes, c. caudal fin; d. dorsal fin. Note the position of the dorsal fin, it is placed very close to the caudal fin..
Further information on fish fossils:
Maisey, J.G. 1991. Santana Fossils - An Illustrated Atlas. T.F.H. Publications, Inc. New Jersey
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If you have comments or suggestions,
please email me (marie Thérèse Rush) at:mrush@uoguelph.ca
