An exceptional perinate Enantiornithes from the Lower Cretaceous of Spain and its implications for ossication pattern in early birds.

Knoll, F., L. Chiappe, S. Sanchez, R. Garwood, N. Edwards, R. Wogelius, W. Sellers, P. Manning, F. Ortega & J. L. Sanz. 2018. An exceptional perinate Enantiornithes from the Lower Cretaceous of Spain and its implications for ossication pattern in early birds. The Fossil Week. 183. Ed.: S. Crasquin. Paris: CR2P.