Snake Evolution by Mason Hayner

Basics

mh65496 — 2025-03-12 17:54:12 UTC

Snakes are long limbless reptiles which have no eyelids, a short tail, and jaws that are capable of big extension. Some snakes have a venomous bite. Snakes are versatile and flexible and able to specialize on prey that other groups cannot use. Snakes are also the only reptiles that have no limbs alongside a few lizards

Lizard

mh65496 — 2025-03-13 17:32:38 UTC

The Snake’s first key answer traces back to lizard like reptiles. This group includes modern lizards, and tuataras. More specifically snakes evolved from burrowing, legged lizards around 100 to 150 million years ago during the late Jurassic period.

Early Squamate

mh65496 — 2025-03-13 17:37:53 UTC

A snake second key ancestor would be likely be a squamate, part of the larger reptile group that includes lizards and snakes. After the first ancestor of burrowing, lizard-like reptiles the key evolutionary stage involves more specialized, elongated reptiles that adapted to life either underground or in water.

Early True Snake

mh65496 — 2025-03-13 17:45:01 UTC

The third key ancestor of snakes is likely an early two snake evolving from transitional legged ancestors like Najash. This next stage in snake evolution starts to resemble modern snakes more closely, loosing limbs entirely and developing advanced adaptations for hunting.

Almost Modern Snake

mh65496 — 2025-03-13 17:48:28 UTC

The Snakes fourth key ancestor would be a fully limbless early terrestrial snake evolving from marine or burrowing predecessors like Pachyrhacis. By this stage around 70 to 80 million years ago, snakes had adapted to life on land or in water without any formated limbs, and their bodies were specialized for slithering

The Snake

mh65496 — 2025-03-14 17:23:43 UTC

From snakes losing legs to stretching skulls, they evolved faster and with more variety than other species. More than 100 million years ago, the ancestors of the first snakes were small lizards that lived alongside other small, nondescript lizards in the shadow of the dinosaurs. Now, their venom has evolved significantly, and now without limbs, they can slither by using friction.

Citations

mh65496 — 2025-03-14 17:36:15 UTC

All images from Google-Info also from google