Click for more on research appearing in the journal Science

Abstract. One of the most transformative advances in molecular systematics over the past several decades has been our understanding of how population proce

Abstract. Time-calibrating a phylogenetic tree is a fundamental step in phylogenetic inference, as it allows the study of macroevolutionary processes such

Abstract. Intraspecific phenotypic variation provides the basic substrate upon which the evolutionary processes that give rise to morphological innovation,

Punctuated equilibrium: state of the evidence

New comatulid crinoids from the Early Cretaceous Glen Rose Formation (Texas, USA): paleobiology and evolutionary relationships of an endemic, ephemeral giant

Abstract. Paleobiologists have long sought to explain how alternative modes of speciation, including budding and bifurcating cladogenesis, shape patterns o

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

Reply to Johnson: Holistic evaluation of ecological models in paleobiology

“Exceptional” fossil collections housed by the Paleontological Research Institute risk being orphaned

Abstract. Paleobiologists have long sought to explain how alternative modes of speciation, including budding and bifurcating cladogenesis, shape patterns o

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...