Aeschronectida

Aeschronectida is an extinct order of mantis shrimp-like crustaceans which lived in the Mississippian subperiod in what is now Montana. ...
Found on http://en.wikipedia.org/wiki/Aeschronectida

Aeschronectida

(from the article `crustacean`) ...limbs massive; marine; about 350 species.†Order PalaeostomatopodaCarboniferous.†Order AeschronectidaCarboniferous.Subclass EumalacostracaLate ... ...thoracic legs ambulatory (walking) or burrowing; abdomen large; pleopods bearing gills; terminal segment with large tail fan; 3 orders.†Ord...
Found on http://www.britannica.com/eb/a-z/a/23
No exact match found