N. Adam Smith
Clemson University
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Publications 30
#1N. Adam SmithH-Index: 11
#2Thomas A. StidhamH-Index: 9
Last. Jonathan S. MitchellH-Index: 10
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The relatively extensive fossil record of owls (Aves, Strigiformes) in North America and Europe stands in stark contrast to the paucity of fossil strigiformes from Africa. The first occurrence of a fossil owl from the Paleogene of Africa extends the fossil record of this clade on that continent by as much as 25 million years, and confirms the presence of large-sized owls in Oligocene continental faunas. The new fossil is tentatively referred to the Selenornithinae, a clade of large owls previous...
#1Daniel T. KsepkaH-Index: 25
#2Amy M. Balanoff (Johns Hopkins University)H-Index: 17
Last. Matthew W. Colbert (University of Texas at Austin)H-Index: 23
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Summary Relative brain sizes in birds can rival those of primates, but large-scale patterns and drivers of avian brain evolution remain elusive. Here, we explore the evolution of the fundamental brain-body scaling relationship across the origin and evolution of birds. Using a comprehensive dataset sampling> 2,000 modern birds, fossil birds, and theropod dinosaurs, we infer patterns of brain-body co-variation in deep time. Our study confirms that no significant increase in relative brain size acc...
1 CitationsSource
#1Charles L. PowellH-Index: 5
Last. Andrei M. Sarna-WojcickiH-Index: 28
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#1Joyce C Havstad (Oakland University)
#2N. Adam Smith (Clemson University)H-Index: 11
: The last half century of paleornithological research has transformed the way that biologists perceive the evolutionary history of birds. This transformation has been driven, since 1969, by a series of exciting fossil discoveries combined with intense scientific debate over how best to interpret these discoveries. Ideally, as evidence accrues and results accumulate, interpretive scientific agreement forms. But this has not entirely happened in the debate over avian origins: the accumulation of ...
#1N. Adam Smith (Clemson University)H-Index: 11
#2Aj M. Debee (University of Texas at Austin)H-Index: 2
Last. Julia A. Clarke (University of Texas at Austin)H-Index: 29
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: Zygodactylidae are an extinct lineage of perching birds characterized by distinct morphologies of the foot and wing elements. Although the clade has a complex taxonomic history, current hypotheses place Zygodactylidae as the sister taxon to Passeriformes (i.e., songbirds). Given the rather sparse fossil record of early passeriforms, the description of zygodactylid taxa is important for inferring potentially ancestral states in the largest radiation of living birds (i.e., the ∼6,000 species of ...
5 CitationsSource
#1Amy M. Balanoff (SBU: Stony Brook University)H-Index: 17
#2Gaberiel Bever (New York Institute of Technology College of Osteopathic Medicine)H-Index: 7
Last. Lawrence M. Witmer (OU: Ohio University)H-Index: 34
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The 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 to integrate critically important fossil taxa. The challenges consist of navigating the logistical barriers that often separate a researche...
33 CitationsSource
#1N. Adam Smith (Clemson University)H-Index: 11
#2Amy M. Balanoff (SBU: Stony Brook University)H-Index: 17
Last. Daniel T. KsepkaH-Index: 25
view all 3 authors...
#1N. Adam Smith (North Carolina Museum of Natural Sciences)H-Index: 11
Abstract. Hypotheses regarding the evolution of many clades are often generated in the absence of data from the fossil record and potential biases introduced by exclusion of paleontological data are frequently ignored. With regard to body size evolution, extinct taxa are frequently excluded because of the lack of body mass estimates—making identification of reliable clade specific body mass estimators crucial to evaluating trends on paleontological timescales. Herein, I identify optimal osteolog...
6 CitationsSource