They are known from locations in Europe, Mexico, United States, Middle East and China.[2][5]
Aegerids such as Anisaeger and Distaeger were found in large numbers of close specimens, suggesting gregarious behaviour. They could have been good swimmers, but the morphology suggests they mostly lived on the sea floor.[2]
^Rodney M. Feldmann; Francisco J. Vega; Leticia Martinez-Lopez; Katia A. González-Rodríguez; Oscar González-León; María Del Rosario Fernández-Barajas (2007). "Crustacean from the Muhi Quarry (Albian-Cenomanian), and a review of Aptian Mecochiridae (Astacidea) from Mexico". Annals of Carnegie Museum. 76 (3): 145–156. doi:10.2992/0097-4463(2007)76[145:CFTMQA]2.0.CO;2. S2CID86572575.