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CARNIVORA Systematics & Biology
Mammalogy – EEOB 625 23 February 2004
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Risks &Advantages of Carnivory
Few orders have been successful, n = ? Adaptations: dental = canines & carnassials digestive & locomotory adaptations Primitive Order Creodonta primitive carnassials: (M2/ M3) Cimolestes: weasel-like member of the ancestral family Miacidae
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Fig Feldhamer See Fig Vaughan
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Adaptations of Carnivores
Dental ‑ Carnassial Teeth: last upper premolar & first lower molar (P4/ M1) Carnassial function - shearing action Digestion: Simple with rapid passage Locomotion: Plantigrade to Digitigrade What is the most highly derived family? Function & control of retractile claws
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Fig. 6.6B, Feldhamer
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Shape of the Mandibular Fossa
Musteliae: “C”-shaped Ursidae flat
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lion hyena dog Fig. 15.4
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Fig. 6.2, Feldhamer
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Fig. 6.2
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Adaptations of an omnivorous carnivore
Schwartz (1959)
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Suborder Feliformia “Cat‑like” taxa in four families
Felidae: most highly derived, speciose (36 species, Herpestidae with 37 species), and nearly Worldwide in distribution Herpestidae & Viverridae Hyaenidae: Highest in adaptive radiation? Ardwolves: transitional to true myrmecophagy?
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Schwartz & Schwartz (1959)
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Adaptive radiation in Hyaenidae
Spotted hyaena Ardwolf
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Suborder Caniformia “dog‑like”families &marine carnivores
Procyonidae: the New World ominvores Giant Panda ‑ a member of Ursidae? ‑ anatomy of the manus and skull ‑ DNA hybridization & other techniques The ursid phylogenetic tree Mustelidae: Origin & diversity (65species)
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Brown bear Giant Panda Raccoon
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