Oldest Sea Monster Babies Found; Fossil Shows Reptiles Had Live Birth
Mother ichthyosaur died while giving birth, scientist says.
The oldest embryos of a Mesozoic marine reptile have been unearthed in China, pre-dating the previous record by ten million years, a new study says.
The 248-million-year-old fossil from the Mesozoic era (252 to 66 million years ago) reveals an ichthyosaur baby inside its mother (orange) and another stuck in her pelvis (yellow). A third embryo discovered nearby suggests it was stillborn; scientists believe the mother died during a difficult labor.
The narrow, eel-like ichthyosaur belongs to the genus Chaohusaurus and is the oldest known species of the group. (Also see "Pictures: Oldest Dinosaur Embryos Show 'Big Surprises.'")
The findings were published February 12 in the journal PLOS ONE.
It's not just the age of the Mesozoic-era discovery that is surprising;