Oldest fossil loon documents a pronounced ecomorphological shift in the evolution of gaviiform birdsWe describe a stem group representative of Gaviiformes (loons or divers) from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK). The holotype of Nasidytes ypresianus gen. et sp. nov. is a partial skeleton including the mandible and all major limb bones. The new species is the oldest unambiguously identified...
Mayr, Gerald ; Kitchener, Andrew C
Best practices for digitally constructing endocranial casts: examples from birds and their dinosaurian relativesThe rapidly expanding interest in, and availability of, digital tomography data to visualize casts of the vertebrate endocranial cavity housing the brain (endocasts) presents new opportunities and challenges to the field of comparative neuroanatomy. The opportunities are many, ranging from the relatively rapid acquisition of data to the unprecedented ability...
Balanoff, Amy M ; Bever, G S ; Colbert, Matthew W ; Clarke, Julia A ; Field, Daniel J …