ichnology |
| noun
- (paleontology) A branch of paleontology concerned with the study of trace fossils. It can be divided into paleoichnology and neoichnology.
| | ichthyosaurus |
| noun Ichthyosaurus (or Ichthyosaur)
(wikipedia, Ichthyosaur)
- Any of various extinct fishlike marine reptiles of the order Ichthyosauria of the Triassic Period to the Cretaceous Period
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