At http://phys.org/print372582577.html … we learn that nesting grounds of sauropod dinosaurs are quite astonishly preserved in some parts of the world, some sites covering many square miles. These form vast playgrounds to rear their young. At Jabaljur in India, and at Lemta Ghat for example eggs of giant crocodiles have also been found in these fossilised nesting sites. The nesting sites with crocodiles tend to be located in estuarine situations in what may indicate crocodiles and dinosaurs wee able to tolerate each other.
Update. Sunday 24th Janury, BBC TV has a Richard Attenbrough programme on dinosaurs in Argentina, including a nesting site.