Animals • April 18, 2026

Embryo Fossil is Missing Puzzle Piece Thrilling Scientists with Oldest Proof that Mammal Ancestors Laid Eggs

Originally published on Good News Network

Embryo Fossil is Missing Puzzle Piece Thrilling Scientists with Oldest Proof that Mammal Ancestors Laid Eggs

A remarkable new discovery is shedding light on one of the greatest survival stories in Earth’s history—and answering a decades-old scientific mystery. Lystrosaurus, a hardy, plant-eating mammal ancestor, rose to prominence following a mass extinction some 252 million years ago—the most devastating extinction event our planet has ever experienced. While countless species vanished, Lystrosaurus not

A remarkable new discovery is shedding light on one of the greatest survival stories in Earth’s history—and answering a decades-old scientific mystery. Lystrosaurus, a hardy, plant-eating mammal ancestor, rose to prominence following a mass extinction some 252 million years ago—the most devastating extinction event our planet has ever experienced. While countless species vanished, Lystrosaurus not
Originally published on Good News Network.

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