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11	EVOLUTION AND DEVELOPMENT OF CETACEAN APPENDAGES Cooper, Lisa Noelle 02 November 2009 (has links) No description available. Biology Cetacea Artiodactyla Raoellidae Indohyus Hyperphalangy Cortical Bone Thickness Apical Ectodermal Ridge Webbing
12	First Occurrence of the Enigmatic Peccaries Mylohyus elmorei and Prosthennops serus From the Appalachians: Latest Hemphillian to Early Blancan of Gray Fossil Site, Tennessee Doughty, Evan M., Wallace, Steven C., Schubert, Blaine W., Lyon, Lauren M. 01 January 2018 (has links) Two peccary species, Mylohyus elmorei and Prosthennops serus are described from the medium-bodied fauna of the Gray Fossil Site (GFS) of northeastern Tennessee. This site, recognized as an oak-hickory forest, is latest Hemphillian or earliest Blancan based on mammalian biochronology, with an estimated age of 4.9-4.5 Ma. The GFS represents the only site outside the Palmetto Fauna of Florida with M. elmorei, greatly expanding the species range north over 920 km, well into the Appalachian region. This is also the first Appalachian occurrence of the relatively widespread P. serus. Our understanding of intraspecific variation for both M. elmorei and P. serus is expanded due to morphological and proportional differences found in cranial and dental material from the GFS, Tyner Farm locality, Palmetto Fauna, and within the literature. The GFS M. elmorei material represents the most complete mandible and second cranium for the species, and preserve intraspecific variation in the length of the diastema, dental proportions, and the complexity of the cuspules of the hypoconulid complex. Similarly, mandibular material from the GFS for P. serus exhibited larger dentitions and a greater degree of robustness than currently recognized for the species. Artiodactyla early blancan Gray Fossil Site hypoconule/hypoconulid complex intraspecific variation latest Hemphillian niche partitioning paleontology Tayassudiae Tayassuinae Geosciences
13	Macroevolutionary Impact of Selective Brain Cooling on the Mammalian Order Artiodactyla O'Brien, Haley D., 22 September 2016 (has links) No description available. Anatomy and Physiology Biology Evolution and Development Paleontology Artiodactyla Carotid Rete Ruminantiamorpha Pecora Tylopoda Suinamorpha Selective Brain Cooling Mammalian Macroevolution
14	Androgen receptors are only present in mesenchyme-derived dermal papilla cells of red deer (Cervus elaphus) neck follicles when raised androgens induce a mane in the breeding season Randall, Valerie A., Hibberts, Nigel A., Street, T., Thornton, M. Julie January 2001 (has links) No / Red deer stags produce an androgen-dependent mane of long hairs only in the breeding season; in the non-breeding season, when circulating androgen levels are low, the neck hair resembles the rest of the coat. This study was designed to determine whether androgen receptors are present in deer follicles throughout the year or only in the mane (neck) follicles when circulating testosterone levels are high in the breeding season. Although androgens regulate much human hair growth the mechanisms are not well understood; they are believed to act on the hair follicle epithelium via the mesenchyme-derived dermal papilla. The location of androgen receptors in the follicle was investigated by immunohistochemistry and androgen binding was measured biochemically in cultured dermal papilla cells derived from mane and flank follicles during the breeding season and from neck follicles during the non-breeding season. Immunohistochemistry of frozen skin sections using a polyclonal antibody to the androgen receptor localised nuclear staining only in the dermal papilla cells of mane follicles. Saturation analysis assays of 14 primary dermal papilla cell lines using [(3)H]-mibolerone demonstrated high-affinity, low-capacity androgen receptors were present only in mane (breeding season neck) cells; competition studies with other steroids confirmed the specificity of the receptors. Androgen receptors were not detectable in cells from either the breeding season flank nor the non-breeding season neck follicles. The unusual biological model offered by red deer of androgen-dependent hair being produced on the neck in the breeding, but not the non-breeding season, has allowed confirmation that androgen receptors are required in follicle dermal papilla cells for an androgen response; this concurs with previous human studies. In addition, the absence of receptors in the non-breeding season follicles demonstrates that receptors are not expressed unless the follicle is responding to androgens. Androgen receptors may be induced in mane follicles by seasonal changes in circulating hormone(s). Breeding season Hormonal receptor Androgen Hair follicle Binding site Cervus elaphus Hair Sex steroid hormone Artiodactyla Ungulata Mammalia Vertebrata
15	The olfactory anatomy and upper respiratory tracts of whales, dolphins, and their terrestrial relatives: Perspectives from morphology, histology, embryology, and evolutionary biology Farnkopf, Ian Chun 28 June 2022 (has links) No description available. Anatomy and Physiology Animals Biology Evolution and Development Morphology Paleontology Histology ontogeny ontogenetic series cetology Cetacea cetacean whale dolphin porpoise olfactory receptor gene olfactory neuroepithelium nose nasal cavity ethmoturbinal olfactory receptor neuron cetaceans olfactory marker protein nasal sense of smell land to water transition Artiodactyla artiodactyl even-toed ungulate Cetartiodactyla

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