CINCINNATI, OHIO (AP).- A fossilized nest of eggs laid by an unknown species of dinosaur is part of an exhibit that makes its world premiere Friday at an Ohio museum. The exhibit at the Cincinnati Museum Center will feature fossils found by Chinese paleontologists, digging in the north-central region of their country. They include a rib more than 9-feet long from a species of the titanosaur family. Paleontologists believe the rib came from an animal probably close to 100-feet long and weighing 32 to 87 tons. Some of the exhibit bones are from two species that lived 89 million to 100 million years ago, museum officials said. “These fossils represent some of the latest fossil discoveries from China,” Glenn Storrs, the museum’s curator of vertebrate paleontology, said Wednesday. Discovery of the fossils from the titanosaur family was important to the field of paleontology, enabling identification of two new species of titanos