Genus: Longusunguis WANG, ZHOU, O'CONNOR & ZELENKOV, 2014
Etymology: Latin, longus, "long" and Latin, unguis, "claw."
Species: kurochkini WANG, ZHOU, O'CONNOR & ZELENKOV, 2014
Etymology: In honor of the late Prof. Evgeny Kurochkin, an eminent paleornithologist who advanced our understanding of fossil birds.
Holotype: IVPP V 17964
Locality: Lamadong Town, Jiangchang County, Liaoning Province, China.
Horizon: Jiufotang Formation.
Age: Early Cretacous.
Material: Nearly complete and partially articulated skeleton.
Note: With feathers close to the skull, and pectoral girdle, and 5 pennaceous feathers.
HU, O'CONNOR, WANG, WROE & McDONALD, 2020
IVPP V18693: A nearly complete adn articulated specimen with poorly preserved feathers.