410 million-year-old extinct spider crawls again

Fossils of an ancient extinct arachnid – one of the first predators on land – let scientists create this video showing the spider’s crawl.

A team of scientists used fossils – thin slices of rock showing the animal’s cross-section – to work out the range of motion in the limbs of this ancient, extinct early relative of the spiders. From this, and comparisons to living arachnids, the researchers used an open source computer graphic program called Blender to create the video showing the animals walking.

Study author Russell Garwood is a palaontologist in the University of Manchester. Dr. Garwood said:

When it comes to early life on land, long before our ancestors came out of the sea, these early arachnids were top dog of the food chain. They are now extinct, but from about 300 to 400 million years ago, seem to have been more widespread than spiders. Now we can use the tools of computer graphics to better understand and recreate how they might have moved – all from thin slivers of rock, showing the joints in their legs.

The study is published in a special issue of the Journal of Paleontology.

Bottom line: Scientists used fossils to create a video to re-create the walking gait of a 410 million-year-old extinct arachnid.

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Eleanor Imster