50.1 MB (50.0 MB compressed)
5581 x 3139 pixels
47.2 x 26.7 cm ⏐ 18.6 x 10.5 in (300dpi)
WALTER MYERS / SCIENCE PHOTO LIBRARY WALTER MYERS / SCIENCE PHOTO LIBRARY
Jonkeria therapsids. Illustration of 3.5-metre-long dinocephalian therapsids of the genus Jonkeria, in a shallow stream in a dry mid-Permian landscape 262 million years ago in what is today South Africa. They each weigh around 225 kilograms. The vegetation includes various ferns.
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