N. Adam Smith
Clemson University
Publications 24
#1Joyce C Havstad (Oakland University)
#2N. Adam Smith (Clemson University)H-Index: 10
#1N. Adam Smith (Clemson University)H-Index: 10
#2Aj M. Debee (University of Texas at Austin)H-Index: 2
Last.Julia A. Clarke (University of Texas at Austin)H-Index: 28
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3 CitationsSource
#1N. Adam Smith (Clemson University)H-Index: 10
#2Amy M. Balanoff (SBU: Stony Brook University)H-Index: 16
Last.Daniel T. KsepkaH-Index: 22
view all 3 authors...
#1Amy M. Balanoff (SBU: Stony Brook University)H-Index: 16
#2Gaberiel Bever (New York Institute of Technology College of Osteopathic Medicine)H-Index: 14
Last.Lawrence M. Witmer (OU: Ohio University)H-Index: 32
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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...
20 CitationsSource
#1N. Adam Smith (North Carolina Museum of Natural Sciences)H-Index: 10
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...
3 CitationsSource
#1Daniel T. KsepkaH-Index: 22
#2James F. Parham (CSUF: California State University, Fullerton)H-Index: 27
Last.Rachel C. M. Warnock (Smithsonian Institution)H-Index: 10
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Fossils provide the principal basis for temporal calibrations, which are critical to the accuracy of divergence dating analyses. Translating fossil data into minimum and maximum bounds for calibrations is the most important-often least appreciated-step of divergence dating. Properly justified calibrations require the synthesis of phylogenetic, paleontological, and geological evidence and can be difficult for nonspecialists to formulate. The dynamic nature of the fossil record (e.g., new discover...
24 CitationsSource
#1N. Adam Smith (National Evolutionary Synthesis Center)H-Index: 10
#2Luis M. Chiappe (Natural History Museum of Los Angeles County)H-Index: 47
Last.Xing Xu (CAS: Chinese Academy of Sciences)H-Index: 44
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ABSTRACT Birds are maniraptoran theropod dinosaurs. The evidence supporting the systematic position of Avialae as a derived clade within Dinosauria is voluminous and derived from multiple independent lines of evidence. In contrast, a paucity of selectively chosen data weakly support, at best, alternative proposals regarding the origin of birds and feathers. Opponents of the theory that birds are dinosaurs have frequently based their criticisms on unorthodox interpretations of paleontological dat...
10 CitationsSource
#1N. Adam Smith (National Evolutionary Synthesis Center)H-Index: 10
#2Julia A. Clarke (University of Texas at Austin)H-Index: 28
Puffins, auks and their allies in the wing-propelled diving seabird clade Pan-Alcidae (Charadriiformes) have been proposed to be key pelagic indicators of faunal shifts in Northern Hemisphere oceans. However, most previous phylogenetic analyses of the clade have focused only on the 23 extant alcid species. Here we undertake a combined phylogenetic analysis of all previously published molecular sequence data (∼ 12 kb) and morphological data (n  353 characters) with dense species level sampling t...
13 CitationsSource
#1Thomas A. Stidham (CAS: Chinese Academy of Sciences)H-Index: 4
#2N. Adam Smith (North Carolina Museum of Natural Sciences)H-Index: 10
The Ameghinornithidae are an enigmatic group of potentially flightless Paleogene birds currently known from three European species. Herein, we report a new fossil that represents the first record of an ameghinornithid-like bird from Africa. The new specimen was collected from the early Oligocene Jebel Qatrani Formation exposed in the Fayum Depression of northern Egypt, and may represent the youngest record of the clade. The new specimen exhibits many similarities with European ameghinornithids, ...
2 CitationsSource