The Jurassic cephalopod Vampyronassa rhodanica, thought to be the oldest known ancestor of the modern-day vampire squid (Vampyroteuthis infernalis), was likely an active hunter—a mode of life that is in contrast with its opportunistic descendant. Scientists led by Sorbonne University came to this conclusion after analyzing microtomographic data of this rare fossil, acquired at the ESRF and the Muséum national d’Histoire naturelle in Paris. The results are published in Scientific Reports.
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Source: Phys.org