Sentences with phrase «tiny conodont»
«We had to go through several tons of rock to look at tiny conodont fossils,» Wignall said.
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Another standard biostratigraphic method — linking the timing of different rock layers by the comings and goings of fossilized teeth of tiny eellike creatures called conodonts — also couldn't be used, because the same species didn't live in cool and tropical waters.
Conodonts, tiny eel - like creatures that lived from 520 million to 205 million years ago and were our earliest vertebrate relatives, have long been one of paleontology's great enigmas.