TOP TEN NEW SPECIES: Ghost Slug and More in Pictures

TOP TEN NEW SPECIES: Ghost Slug and More in Pictures
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Mother Fish: First Pregnancy?

"The oldest pregnant mum"--as the journal Nature described the so-called mother fish (Materpiscis attenboroughi)--was discovered via a 380-million-year-old fossil with an impression of an embryo in its uterus, making this swimmer the oldest creature known to have sexually reproduced and given birth to live young.

(FULL STORY: "Oldest Live-Birth Fossil Found; Fish Had Umbilical Cord.")

Though long extinct, M. attenboroughi still edged out more than 15,000 living creatures discovered in 2008 to claim a spot on the 2009 list of the top ten species documented in 2008.

—Image courtesy John A. Long
 
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