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Rare fossil clam discovered alive

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Discovering a new species is always exciting, but so is finding one alive that everyone assumed had been lost to the passage of time. A small clam, previously known only from fossils, has recently been found living at Naples Point, just up the coast from UC Santa Barbara. The discovery appears in the journal Zookeys.
Discovering a new species is always exciting, but so is finding one alive that everyone assumed had been lost to the passage of time. A small clam, previously known only from fossils, has recently been found living at Naples Point, just up the coast from UC Santa Barbara. The discovery appears in the journal Zookeys.

«It’s not all that common to find alive a species first known from the fossil record, especially in a region as well-studied as Southern California,» said co-author Jeff Goddard, a research associate at UC Santa Barbara’s Marine Science Institute. «Ours doesn’t go back anywhere near as far as the famous Coelacanth or the deep-water mollusk Neopilina galatheae—representing an entire class of animals thought to have disappeared 400 million years ago—but it does go back to the time of all those wondrous animals captured by the La Brea Tar Pits.»
On an afternoon low tide in November 2018, Goddard was turning over rocks searching for nudibranch sea slugs at Naples Point, when a pair of small, translucent bivalves caught his eye. «Their shells were only 10 millimeters long,» he said. «But when they extended and started waving about a bright white-striped foot longer than their shell, I realized I had never seen this species before.» This surprised Goddard, who has spent decades in California’s intertidal habitats, including many years specifically at Naples Point. He immediately stopped what he was doing to take close-up photos of the intriguing animals.
With quality images in hand, Goddard decided not to collect the animals, which appeared to be rare. After pinning down their taxonomic family, he sent the images to Paul Valentich-Scott, curator emeritus of malacology at the Santa Barbara Museum of Natural History.

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