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Thomas R. Diehl

Pulling Through

Possible Aquatic Locomotion in Spinosauridae

Science Paper Proposal (Paleontology)

The enlarged thumb claw seen in most spinosaurids has traditionally been interpreted in many ways, the most common current interpretation seemingly being that of a fishing instrument. The author of this text doubts this is a feasible use given the claw's size and shape. Instead, he proposes the idea of the claw being a locomotive organ in shallow water, its bearers using it by anchoring the claws in the ground and then pulling themselves forward with their unusually developed arms.