[1][2] Along with other well-preserved insect fossils, the A. seldeni specimens were collected from layers of the Upper Aptian Crato Formation.

The formation is composed of unweathered grey and oxidized yellow limestones, which preserved numerous insects, fish, birds and reptiles as a notable lagerstätte.

[1] A second specimen was described by Justine Myskowiak and a research team who published a description of it and a slight revision of the genus diagnosis in 2016.

[6] Lu, Xu and Liu (2022) named a second species A. burmanus based on the Burmese amber (early Cenomanian) where its fossils are found.

[7] Khramov and Nam (2024) named a third species A. koreicus from the Jinju Formation (Albian) based on the country South Korea where its fossils are found.