Maybe you've seen a "mermaid's purse" while walking on the beach. Not actually an accessory for the mythical creature, these small casings are the eggs of sharks and their relatives. For around 455 ...
The Daily Galaxy on MSN
Locked inside ancient rock, this 310-million-year-old shark egg case has just been found preserved against all odds
A 310-million-year-old shark egg case has been discovered in South Yorkshire. The fossil, identified by Dean Lomax and his team, stands out because soft-bodied remains like this almost never survive.
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