Pappochelys

Name meaning:

Grandfather of turtles

Period of life:

242—235 million years ago

Period:

Triassic period

Habitat:

Lakes and marshes

Taxonomy:

Turtles and tortoises

Countries:

Triassic period Pappochelys | 3D Dinopedia

Proganochelys

Odontochelys

Pappochelys (242—235 million years ago)

What the name means: "grandfather turtle"

At the dawn of the Mesozoic era, about 240 million years ago, an unusual inhabitant of ancient lagoons lived in what is now Germany — Pappochelys, whose name translates as “grandfather turtle.” This small creature, only about 20 centimeters in length, became a key to understanding the origin of turtles — one of the most distinctive groups of animals on Earth.

Pappochelys belonged to early diapsid reptiles — the group from which lizards, snakes, crocodilians, and dinosaurs later evolved. Its discovery provided an important link connecting ancient lizard-like reptiles with the first true turtles.

What the ancient “ancestor of turtles” looked like

In appearance, Pappochelys resembled a lizard with a long tail, which made up half of its body length. However, closer examination reveals features characteristic of future turtles. On its underside were thickened abdominal ribs — gastralia — forming a kind of bony “armor plate.” In later descendants, these bones fused to form the strong lower shell — the plastron.

The teeth of Pappochelys were sharp, similar to those of predatory lizards. It likely fed on worms, larvae, and soft-bodied invertebrates, which it dug out from the bottom of water bodies. Its robust bones made the body relatively heavy — an adaptation suited to a benthic lifestyle, allowing it to remain submerged and forage among sediment and vegetation.

A skull that revealed evolutionary history

The structure of its skull attracted particular attention from paleontologists. Unlike modern turtles, which have completely lost temporal openings, Pappochelys possessed two — a characteristic feature of diapsid reptiles. This provided decisive evidence that turtles evolved from diapsids rather than from a more primitive group, as had previously been proposed.

Thus, Pappochelys represents a transitional form between ancient lizard-like reptiles and the first turtles. Its anatomy demonstrates how the distinctive features of turtles gradually developed — from reinforced abdominal ribs to the loss of temporal openings and the formation of a bony shell.

Pappochelys was a small organism, but its significance in the history of life on Earth is considerable. It helped scientists understand how, through millions of years of evolutionary experimentation, nature produced one of the most remarkable animals on the planet — the turtle, whose shell became a symbol of endurance and longevity.

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