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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Parahesperornis alexi KUVP 2287, additional details from the slab in Figure 69 showing scutes and scutellae (A) as well as an indeterminate impression (B) interpreted by Williston [53] as feather impressions.