Clayton must haul his 20,000-pound dinosaur fossil over 200 miles to a lab where it will finally be identified. The Harris/Bolan clan chases poachers off of their land and Jared makes a last-ditch effort to bring in some money this season.

Clayton and Luke begin to excavate the deep overburden that covers the T-Rex site. And while Mike Harris travels to Utah to prep the Cowboy Rex skull, Aaron, Jake and Tori think they're on a bucket-list discovery at the Duckbill site.

When a valuable fossil is trapped in a precarious location, Clayton brings in a team of horses and a helicopter to help extract it. Mike comes face-to-face with Cowboy Rex, and Andre makes a difficult decision to save the Abercrombie's mammoth.

Clayton Phipps makes a shocking discovery at the Trike site. The Harris-Bolan crew unearths what they believe might be an extremely rare Ceratopsian. And on the Abercrombie ranch, Andre Lujan digs up an enormous Ice Age Mammoth tusk.

Clayton Phipps continues his excavation of a rare carnivorous dinosaur on his Montana ranch; Mike Harris and son Jake prepare to sell their prized tyrannosaurus-rex fossil; Aaron Bolan hunts for an ankylosaurus.

With their prized carnivore fossil finally at the lab, Clayton returns to his ranch in Montana to hunt for quick finds at Old Faithful. In Wyoming, Mike Harris and his team continue excavating their triceratops site hoping to uncover the valuable horns.

With winter looming, Clayton and Luke race to excavate two massive trike skulls, while the Harris-Bolan crew searches for a crucial missing femur for their rare ceratopsian. On the Abercrombie Ranch, Andre discovers a mother-lode of Ice Aged bones.

Montana rancher Clayton finds what might be a rare and valuable fossil on his family's property. In Wyoming, Mike and his son uncover a triceratops horn.