User blog comment:BonesMcGee/Brainstorm: Potential savings in using the hurry hatch trick/@comment-5434383-20120912105231

12 September:

21 attempts gave Dimetrodon (which I dumped because my previous two attempts at 10HH over the past couple of days were also Dimes which I hatched, but enough already!)

Soldiering on, a further 146 attempts has yielded a Corythosaurus! Not what I was chasing, but it'll do :-)