Wild Things: Wildcats, Pigeons and More...
Sea monster mamas, bat signals and opossum versus viper
- By T.A. Frail, Joseph Stromberg, Erin Wayman and Sarah Zielinski
- Smithsonian magazine, October 2011

(Courtesy of the National Science Foundation)
Marine reptiles known as plesiosaurs may have been the best mothers of the Mesozoic. A new analysis of the fossil of a 78-million-year-old pregnant plesiosaur, on display at the Natural History Museum of Los Angeles County, reveals they had one giant baby at a time. Modern whales and reptiles that bear a single large offspring live in social groups and care for their young, suggesting plesiosaurs did, too.





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