Réptil para Mamíferos: Outro elo… e marinho?

Did reptile swimmer show mother love?

A fossil of a plesiosaur, an extinct marine reptile, has revealed that not only did these animals give birth to live young, they may also have cared for their offspring in a manner similar to today’s whales and dolphins.


( Hummm… mamiferos aquaticos tambem mantem os ovos dentro. Wikipedia:

Blue Whales: Little is known about mating behaviour or breeding grounds. Females typically give birth once every two to three years at the start of the winter after a gestation period of 10 to 12 months.[43] The calf weighs about 2.5 metric tons (2.8 short tons) and is around 7 metres (23 ft) in length. Blue whale calves drink 380–570 litres (100–150 U.S. gallons) of milk a day. Weaning takes place for about six months, by which time the calf has doubled in length.

E notar pelo comentário abaixo, que talvez a origem da gestação mamifera se tenha dado na água:

” The concept of live birth limiting body size may hold across most species but the largest animal on the planet today is a marine mammal which reproduces via live birth – the blue whale. They key there might be the word marine, as the boyancy factor in water certainly plays a role in making such reproduction more viable.”

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