Input (grade 13): Walcott, led by scientific opinion at the time, attempted to categorise all fossils into living taxa, and as a result, the fossils were regarded as little more than curiosities at the time.
Output (grade 9): Walcott, led by scientific opinion at the time, attempted to categorise all fossils into living taxa. As a result, the fossils were regarded as little more than curiosities at the time.