I have lost a character and Dinosaurs before due to different reasons. A Server update accidentally made our server Hardcore mode and character was lost,.and a bug causing Giga to Rocket jump deep into the ocean. I immediately attempted to schedule an appointment. For some reason no matter what the issue response was given within 24-48 hours, but appointments took 2-3 weeks to meet with a GM. My character levels were restored and I was given Tribe Ownership. The only reason I kept my items and dinosaurs was because I had another tribe member at that time to sign-in and feed and/or check land. Dinosaurs can be restored without imprints and capped at certain level no matter what it previously was provided you can provide screenshot and logs. Another option was to receive a baby to imprint again but I did not consider that option worth all the time I had already lost. Best of luck with everything, in my experience I have never been satisfied with the restore options due to losing valuable game time invested and decay timers put certain Dinosaurs and Structures at risk(ie... Otters, Gigantosaurus's, Green Houses, etc...).