Search
Skip to Search Results- 15Graduate and Postdoctoral Studies (GPS), Faculty of
- 15Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 4Biological Sciences, Department of
- 4Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 1Philosophy, Department of
- 1Philosophy, Department of/Book Reviews (Philosophy)
-
A new voltzialean conifer, Emporia royalii sp nov. (Emporiaceae), from the Hamilton Quarry, Kansas.
Download2009
Stockey, R.A., Rothwell, G.W., Hernandez-Castillo, G.R., Mapes, G.
A new species of extinct conifer plants, Emporia royalii sp. nov. Hernandez-Castillo, Stockey, Mapes et Rothwell (Emporiaceae: Voltziales), is described from the rich fossil biota of the Late Pennsylvanian, Hamilton Quarry, Kansas. This conifer has lateral plagiotropic branches with simple and...
-
Spring 2016
Mosasauridae is a lineage of extinct marine squamates that inhabited the world’s oceans during the Late Cretaceous (100-66 Ma). The name Mosasaurus was given to the first described specimen, which was a fossil discovered in Maastricht, the Netherlands, during the 1770s. Naturalists of the time...
-
An Evaluation of Embalmed Cadaveric Human Tissue in the Investigation of Multiple Freeze and Thaw Cycles on the Histological Morphology of Human Bone
DownloadFall 2012
Our understanding of the myriad of possible taphonomic agents acting on remains in a forensic context has dramatically increased over the last two decades (Haglund and Sorg, 2002); however, the effects of cold temperature on the microstructure of bone tissue are still not well understood. Recent...
-
Bare-bones Paleontology: An Examination of the Systematic Methods Used in Vertebrate Paleontology and their Congruence with Avian Ichnotaxonomy
DownloadSpring 2016
Data used in the systematic paleontology of extinct vertebrates is limited to what can be collected from detailed comparisons of preserved anatomy. This restricts vertebrate paleontologists to those characters preserved on osteological specimens. Furthermore, parataxonomies such as ichnotaxonomy...
-
Cranial Morphology, Taxonomy, and Systematics of Pachycephalosaurids (Dinosauria, Ornithischia)
DownloadSpring 2022
Pachycephalosauridae (pachcycephalosaurids) were small to medium sized bipedal ornithischians, known solely from the Late Cretaceous of North America and Asia. These dinosaurs are characterised by thick, often domed frontals and parietals (frontoparietal dome), which are thought to have been used...
-
Critical analysis of the factors affecting the "cranial suture aging method" using the Hamann Todd Collection
DownloadFall 2014
Cranial suture closure has been regarded as an unreliable method for age estimation due to the large amount of variability in the commencement, progression and termination of fusion. A preliminary study done on the J.C.B. Grant Collection (University of Toronto; Toronto, Ontario) showed that...
-
Fall 2015
Speciation can be an elaborate process. Delimiting species and reconstructing evolutionary relationships may be similarly complex, revealing gene tree discordance, cryptic species, geographic structuring or hybridization. In order to solve such systematic problems, a careful balance should be...
-
Microascus brevicaulis sp. nov., the Teleomorph of Scopulariopsis brevicaulis, Supports Placement of Scopulariopsis with the Microascaceae
Download1998
Abbott, Sean P., Sigler, Lynne, Currah, R.S.
Five isolates of Scopulariopsis brevicaulis have been found to form perithecia in addition to typical conidia. The teleomorph is described as Microascus brevicaulis sp. nov., characterized by small (70-130 pLm diam), black, ostiolate ascocarps that are papillate or very short-necked, and with a...
-
2015-01-01
Donovan, S.K., Jones, B., Harper, D.A.T.
The first fossil echinoids are recorded from the Cayman Islands. A regular echinoid, Arbacia? sp., the spatangoids Brissus sp. cf. B. oblongus Wright and Schizaster sp. cf. S. americanus (Clark), and the clypeasteroid Clypeaster sp. are from the Middle Miocene Cayman Formation. Test fragments of...