Editing Mosasaur (section)

===Ontogeny and growth===
Mosasaur growth is not well understood, as specimens of juveniles are rare, and many were mistaken for hesperornithine birds when discovered 100 years ago. However, the discovery of several specimens of juvenile and neonate-sized mosasaurs unearthed more than a century ago indicate that mosasaurs gave birth to live young, and that they spent their early years of life out in the open ocean, not in sheltered nurseries or areas such as shallow water as previously believed. Whether mosasaurs provided parental care, like other marine reptiles such as plesiosaurs, is currently unknown. The discovery of young mosasaurs was published in the journal ''Palaeontology''.<ref>{{Cite news|url=https://www.sciencedaily.com/releases/2015/04/150410113408.htm|title=What life was like for newborn giant sea lizards during the age of the dinosaur|work=ScienceDaily|access-date=2017-08-01|language=en}}</ref>