Burmese amber has been radiometrically dated using U-Pb isotopes, yielding an age of approximately 99 million years old, close to the Aptian – Cenomanian boundary.

[2] The holotype, a single, complete adult with specimen number "AMNH Bu-1464", and six of the paratypes are now deposited in the American Museum of Natural History.

The remaining two paratype specimens are currently in a private collection, but are to be deposited in the Field Museum of Natural History, Chicago.

In addition to the holotype and 12 paratypes, two other American Museum of Natural History specimens were examined as part of the study; however, they were not designated as type material.

[1] Chatzimanolis, Engel and Newton published the 2010 type description for E. paradoxa in the journal Cretaceous Research, Volume 31.