Ryan D. Marek

This study examines the co-evolution of neck, head, and forelimb traits in theropods and birds, finding adaptive shifts and reduced evolutionary rates in birds.

This study investigates factors influencing cervical vertebrae morphology in parrots, finding that phylogeny, allometry, integration, diet, and tripedal locomotion significantly affect shape, but diet and locomotion have weak influences with high morphospace overlap.