Adolescent pregnancy is not a modern invention,it occured in dinosauers mills of yrs ago. Washington AP
Medullary bone,a type of tissue present modern birds when they r developing eggs,
has been found in three dinosauer fossils,
US researchers report of da Natl Academy of Sciences.
The dino were aged 8,10 and 18,saying they reached sexual maturity earlier than previously thought.
In modern birds,dis tissue lines bones for only a few weeks when they r producing eggs and is then reabsorbed.
Finding it in dinos,which r believed to be da ancestors of birds,
shed light on their reproduction also.
Most dinos lived to about aged 30,though some reached 60,report said.
Medullary bone,a type of tissue present modern birds when they r developing eggs,
has been found in three dinosauer fossils,
US researchers report of da Natl Academy of Sciences.
The dino were aged 8,10 and 18,saying they reached sexual maturity earlier than previously thought.
In modern birds,dis tissue lines bones for only a few weeks when they r producing eggs and is then reabsorbed.
Finding it in dinos,which r believed to be da ancestors of birds,
shed light on their reproduction also.
Most dinos lived to about aged 30,though some reached 60,report said.