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.

Clayton continues his excavation of a rare, carnivorous dinosaur on his Montana ranch. In Wyoming, Mike and Jake prepare to sell their prized T-Rex fossil.

Clayton and his team prepare to flip a 20,000-lb carnivore fossil from the earth. Mike hunts for a duckbill skull and Jared uncovers an ancient reptile.

Clayton must haul his 20,000-lb dinosaur fossil to a lab for analysis. The Harris-Bolan clan chases poachers off their land and Jared makes a final bid to make money.

Clay returns to his ranch in Montana to hunt for quick finds at Old Faithful. In Wyoming, Mike and his team continue excavating their triceratops site.

In Montana, Clayton prepares to learn if his carnivore skeleton belongs to a T-Rex or Nanotyrannus. In Wyoming, Mike and Aaron dig at a promising new site.

It's a tense wait for Clayton Phipps as he calls in a surveyor to check his promising T-Rex dig site. Mike takes a risk to prep his valuable T-Rex skull.

Aaron, Jake and Tori hope to find a skull at the Duckbill site. Clayton begins to excavate the T-Rex site, and Mike travels to Utah to prep the T-Rex skull.

When a wildfire surrounds his hometown, Clayton Phipps helps fight the flames. Plus, the Abercrombie family discovers a Mammoth fossil map on their ranch.

In Wyoming, Mike Harris and his team uncover a huge Triceratops. Plus, fossil hunter Andre Lujan follows a 90-year-old map to a massive mammoth site.

The Harris-Bolan crew unearths an extremely rare Ceratopsian. Clayton Phipps makes a shocking discovery, and Andre Lujan digs up an enormous mammoth tusk.

With winter approaching, Clayton and Luke race to excavate two big Triceratops skulls. The Harris-Bolan crew search for a crucial missing femur for their Ceratopsian.

Clayton gets news about the Nano sale races to extract a rare trike tail before a storm hits. The Harris-Bolans have finally found evidence of a Cerotopsian skull.

Clayton brings in a team of horses and a helicopter to help extract a valuable fossil that's trapped in a precarious location. Mike comes face-to-face with Cowboy Rex.