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- 12Graduate Studies and Research, Faculty of
- 12Graduate Studies and Research, Faculty of/Theses and Dissertations
- 11Biological Sciences, Department of
- 11Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 3Philosophy, Department of
- 2Philosophy, Department of/Journal Articles (Philosophy)
Extinct snake taxa are primarily recognized from isolated vertebrae. A new specimen from the Oligocene of Wyoming provides a rare opportunity to examine four nearly complete and articulated fossil snakes. Informally assigned previously to the ‘erycine’ vertebral form taxa Ogmophis and...
With well over 3,400 described species, snakes undoubtedly represent one of the most successful groups of reptiles. Much has been written about their ecology, behavior, anatomy, relationships and evolution. However, despite the debate about the origin of this taxonomic group dating back to the...
Jayaraman, Dhileepkumar , Zhang, Yong , Radhakrishnan, Guru V , Sederoff, Heike Winter , Malbreil, Mathilde , Sekimoto, Hiroyuki , Surek, Barbara , Delaux, Pierre-Marc, Ané, Jean-Michel , Roux, Christophe , Sussman, Michael R , Dunand, Christophe , Rothfels, Carl J , Oldroyd, Giles ED , Cheema, Jitender , Wong, Gane Ka-Shu , Stevenson, Dennis W , Melkonian, Michael , Pokorny, Lisa , Morris, Richard J , Nishiyama, Tomoaki , Volkening, Jeremy D
Pachyrhinosaurus is a peculiar ceratopsian known only from Upper Cretaceous strata of Alberta and the North Slope of Alaska. The genus consists of three described species Pachyrhinosaurus canadensis, Pachyrhinosaurus lakustai, and Pachyrhinosaurus perotorum that are distinguishable by cranial...
The Ellimmichthyiformes is an extinct order of clupeomorph fishes. This group includes fossil species from marine, estuarine, and freshwater sediments ranging in time from the Early Cretaceous to the Eocene. In spite of the long history of taxonomic studies on the Clupeomorpha, phylogenetic...
Osteology, Taxonomy, Phylogeny, and Body Shape Changes of Eocene Catostomid and Problematic Catostomid FishesDownload
Extant catostomid fishes occupy diverse aquatic ecosystems and niches in North America (NA). Less than 3% of catostomid taxonomic richness, or two species, are found outside of NA in Asia. Such adjunct and unbalanced distribution pattern has been established since the late Oligocene, when...
Leafrollers moths are one of the most ecologically and economically important groups of herbivorous insects. These Lepidoptera are an ideal model for exploring the drivers that modulate the processes of diversification over time. This thesis analyzes the evolution of Choristoneura Lederer, a well...