Anthracomartus
Anthracomartus is an extinct genus of Carboniferous-aged trigonotarbid arachnids. A fossil of the species Anthracomartus hindi was found to be long and wide.
3-D modeling
Scientists at Imperial College London created a detailed 3D computer model of A. hindi from fossils.3D imaging revealed A. hindi has a flat body and large front limbs, indicating ambush hunting techniques similar to that of modern crab spiders due to the similarities in their anatomical features.