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[QUOTE]Originally posted by DD'eDeN: [QB] The ecological niche of the Morotopithecus, with implications for hominoid evolution LAURA MACLATCHY, JAMES ROSSIE & JOHN KINGSTON 2016 AAPA The Moroto II locality (Uganda >20.6 Ma) is best known for the hominoid Morotop. Recently, dental fossils from the site have revealed evidence for folivory: - long tooth row, - large, narrow M2 with well-developed cristids. Additional recovery of femoral fragments have completed the shaft of MUZM 80: Morotop had a short shaft relative to femoral joint proportions, as in other hominoids, unlike Proconsul & cercopithecoids. This corroborates earlier interpretations that Morotop loaded the hind- & forelimbs differentially in behaviors incl.orthograde slow climbing. Morotop (one of the oldest hominoids) is more derived post-cranially than pene-contemporaneous & younger taxa. To date, Morotop is found only in NE-Uganda, not at the younger Napak sites to the South, or at any of the Kenyan early Miocene sites in the Eastern rift. The C-isotopic dietary signatures obtained from the enamel from a range of herbivore guilds at Moroto - are considerably more positive than in modern closed-canopy forest-dwellers, - suggest a fragmentary forest or woodland habitat. Our combined data suggest an explanation for these incongruities: Morotop may have evolved its more versatile postcranium to better exploit leaves arboreally at large body size in an environment in which it became necessary to traverse gaps in a broken canopy. This perspective contrasts with the long-held view that exploitation of ripe fruit selected for hominoid postcranial apomorphies. _______ [comments:MV] "Thick enamel, but folivory. Lumbar vertebrae remarkably human/ape-like (A.Filler "Upright Ape") = stiff vertical lumbar spine? Morotop=Afrop=Heliop, says Pickford. Heliop (the Saudi ape 17 Ma) was found in near-coastal sediments in the Gulf: S-Tethys coasts, Engelswies 17 Ma S-Germany cf.Griphop = N-Tethys (Alp fm), Austriacop=Griphop 14 Ma Slovakia near-coastal: found near seals-cetaceans-...! = mangrove? " [/QB][/QUOTE]
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