Alcmonavis poeschli was named by Rauhut et al. (2019) [Alcmonavis poeschli differs from all other theropods (including birds) in the following combination of characters: humerus with large deltopectoral crest, with a maximal expansion that exceeds the width of the humeral shaft; proximal part of humerus strongly angled at approximately 38° in respect to distal shaft; ulna with well-defined, single, oval, concave proximal cotyla and small lateral tubercle; distal end of ulna slightly asymmetrically expanded; large, crest-like biceps tubercle on the proximal radius; longitudinal groove along the medial side of the radial shaft; metacarpal II considerably more robust than metacarpal I and III; phalanx I-1 with longitudinal groove; phalanx II-1 very robust, but with rounded, rather than flattened cross-section; phalanx II-1 slightly twisted; manual unguals with strongly developed and palmarly transversely expanded flexor tubercles.]. Its type specimen is SNSB-BSPG 2017 I 133, a set of limb elements (An almost complete, partly disarticulated skeleton of the right wing), and it is a compression fossil. Its type locality is Old Schöpfel Quarry, Schaudiberg, which is in a Tithonian lagoonal/restricted shallow subtidal lime mudstone/marl in the Mörnsheim Formation of Germany.