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A Bloom of Moon Jellies
In recent years, blooms of jellyfish, such as these moon jellies (Aurita aurita) in...
How long have jellyfish lived in the ocean? This jellyfish fossil is from the...
Fossil tooth spiral
This fossil tooth whorl of the ancient shark Helicoprion, dates back 290 million...
Two fossilized teeth from a megalodon (Carcharodon megalodon) dating back more than...
Giant Megatooth Model
A life-sized model suspended over visitors at the San Diego Natural History Museum...