Opossums are known for their small cranial cavity relative to total body size and their great number of teeth. Figure 2 shows the palatal vacuities nicely as well as the down-turned posterior end of the hard palate. Learn mammalogy skulls with free interactive flashcards. Didelphis virginiana. Opossum Skull Replica Accurate replica of one of North America’s most common, widespread, and also most primitive nocturnal mammals, Didelphis virginiana. The marten I did myself, with a Dremel. One of a group of marsupial opossum species distributed throughout the Americas. Underfur is dense with sparse guard hairs. This native species is a marsupial about the size of a housecat, but with shorter legs, large naked ears, and a long prehensile tail. The skull of the mountain lion is noticeably broad and short with a high forehead region. The present work was conducted on 10 skulls and mandibles of the common opossum to describe the osteology and foramina of these skulls and mandibles grossly and radiographically. Results showed that males have larger skull and acetabulum size than females, epipubic bones of females are almost half the size of a female’s skull while that of the male is a little less than a third of the male cranial size. three skulls of D. virglniana (C, D, and E). A group of four Virginia opossum (Didelphis virginiana) skulls. Fig. The skull was opened rapidly, the pituitary gland removed, and the neuro- hypophysis dissected. Fig. Additional information on age stages was obtained from Lowrance (1949), Petrides (1949), and Gardner (1982), who studied Didelphis virginiana. Body is 15–20 inches long. We therefore evaluated epipubic bone size of Virginia Opossum (Didelphis virginiana) from Mexico, and estimated their proportions relative to skull size of individuals. The skulls clearly show the sharp, jagged teeth of the animal, with mandibles closed. I think the opossum skull was already hemisected when it came to me – at least, I can’t find the other half. Slightly Pathological: skulls that exhibit a slight pathological abnormality (a dental anomaly, infection or … Virginia opossum—Didelphis virginiana 1) dental formula = I5/4 C1/1 P3/3 M4/4 2) prominent sagittal crest 3) fenestrated palatines 4) angular process medial from mandible. The face … Virginia opossum ( Didelphis virginiana ) Also known as a North American Opossum This specimen is almost a collectors grade skull, except it has one chipped lower canine. The tail may be unusually short in Photograph courtesy of Skulls Unlimited. The opossum is definitely Didelphis virginiana. Published 5 December 2008 by the Department of Wildlife and Fisheries, Mississippi State University Fig. ... humerus length 70.3, radius length 70.7, scapula length 65.9, skull 119.0 x 66.0, tibia length 85.6, ulna length 85.6. 2008 SOUTHEASTERN NATURALIST 7(1):125–134 Osteological Variation within the Baldwin County, Georgia, Population of Didelphis virginiana David B. 2. The Virginia opossum (Didelphis virginiana), commonly known as the North American opossum, is the only marsupial found north of Mexico. Newborns in D. virginiana weigh 0.13 g (Hartman 1928), and newborn mass is 0.01% of maternal mass (Parker 1977). A2: Slightly imperfect (may be missing 1-2 small teeth and/or have small chips, cracks or holes) A3: Bone shattered or crushed; may be suitable only for art. Animals that are protected in the state of Texas are not presented. For light microscopy, pituitary glands were fixed in … Specimens are accompanied by identification tags. Common opossums (D. marsupialis) are found throughout much of Central and South America and the Caribbean. I: 5/4; C: 1/1; Pm: 3/3; M: 4/4 = 50 Masupial skull characteres: - possibly more than 3 incisors by half jaw - possibly 4 molars (3 maximum in placental mammals) - palatal holes - nasal enlarged at its base, close to frontal bones - inflection of the mandibular angular process - jugal participating in the jaw articulation in the mandibular fossa - ear bulla absent ? Ventral view of the skull and medial view of the dentary of Didelphis virginianus. American Midland Naturalist 107(2): 258-261. Opossum skull, lateral view. Dorsal views of two skulls of Did elphls marsupialis (A and B) and. ... Didelphis virginiana: Opossum 55. The skulls and skins presented in this guide are from furbearers, game animals, and unprotected non-game animals as found in the Texas Parks and Wildlife Outdoor Annual (2015-2016). 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