In the fourth episode, Dromaeosaurs stalk a hadrosaur herd as they cross a freezing river. Male Ornithomimus raid rival nests to bolster their own. Olorotitan raise their offspring on fertile volcanic fields but contend with biting mosquitoes. Troodontids hunt mammals flushed out by a forest fire. A juvenile Antarctopelta scours the fore ...st for a new winter den. Within the snow-covered forest, a tense standoff develops between ancient rivals, Pachyrhinosaurus and Nanuqsaurus.
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Troodontids hunt mammals flushed out by a forest fire. A juvenile Antarctopelta scours the fore ...st for a new winter den. Within the snow-covered forest, a tense standoff develops between ancient rivals, Pachyrhinosaurus and Nanuqsaurus. Show More