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Zinjanthropus was an early hominin
Lower Cretaceous of about 110 million years ago
30--Ectenaspis latucelsum--Ordovinian--UT
As teeth approach 6 inches they become rare
Utahraptor ostrommaysorum, Skull Oviraptor Zinjanthropus was an early homininUtahraptor (meaning "Utah's predator" is a genus of theropod dinosaurs. It contains a single species, Utahraptor ostrommaysorum, which is the largest known member of the family Dromaeosauridae. Fossil specimens date to the upper Barremian stage of the early Cretaceous period (in rock strata dated to 126 2. 5 million years ago). The holotype specimen of Utahraptor is fragmentary, consisting of skull fragments, a tibia, claws and some caudal (tail)