Fossilized Pregnant Dinosaur May Present First Evidence of Live Birth



This fossilized Polycotylus latippinus, a carnivorous marine reptile that lived 78 million years ago, contains a smaller, less developed skeleton inside of her. Scientists are therefore speculating that this creature did not lay eggs like other dinosaurs, but gave birth to live young. If true, then this dinosaur may have exhibited maternal care behavior similar to modern marine mammals, such as dolphins. This fossil is on public display at the Natural History Museum of Los Angeles, so if you live in that area, you can get a close look for yourself.

Link -via reddit | Photo: Natural History Museum of Los Angeles Count

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Given how many times live birth has evolved in reptiles (100+), it really isnt that unlikely that this is also a live bearing species.
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@Muzition

"It makes sense that a completely marine reptile would not lay eggs."

Bwahahahahahahaha. Let me guess, Public School?

**cough** Sea Turtles **cough**
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+1 Vonskippy. What he says is 100% true. Archaeology and Paleontology are weak sciences in that a true test of a theory can never be done without a time machine. All evidence is ultimately speculative.

Physics and Chemistry are strong sciences since theories can be tested and create positive proof... like exploding all over the lab.

As to this whatever-it-is, it could have been eaten (as V said), fallen over on it in death, or something else.

There used to be a concept in science which said that the simplest answer is general the correct one. People are forgetting that.
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^^ Completely agree with Rumson.

Back on topic, it makes sense that a completely marine reptile (i.e. one that spends its entire life in the ocean) would not lay eggs.
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