The Great Snake Debate | Eons

PBS Learning Media
Contributed By
PBS Learning Media
Resource Type
Classroom Material
Keywords
pbs digital studios eons ancient snake najash legs limbs predator najash rionegrina fossil bones vertebrate lizards herpetology mouth skull jaws unhinge terrestrial lizards aquatic lizards mosasaurs jaw adaptations pachyrhachis marine reptile snake family tree ancient snakes eophis underwoodi genetics molecular evidence gene data varanid lizard terrestrial snake terrestrial hypothesis aquatic hypothesis evolution genomi
Subjects
Science
Grade Levels
Grade 9 Grade 10 Grade 11 Grade 12
Related Resources

The Great Snake Debate | Eons

90 million years ago, an ancient snake known as Najash had...legs. It is by no means the only snake to have limbs either. But what’s even stranger: we’re not at all sure where it came from.
Publisher
PBS Learning Media

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