- Comparative Anatomy
the attainment of the final stages of tissue or organ differentiation; marked in primates by attainment of puberty, full dental eruption, and epiphyseal union of the skeletal elements.
very large teeth, relatively to the size of the mouth.
[Greek: "middle life"] a geological era that approximately dates from 245 million years ago to 65 million years ago; contains the geologic periods Cretaceous, Jurassic and Triassic.
[syn. Middle Stone Age or Middle Paleolithic] the time period of tool manufacture approximately dated between 250,000 and 40,000 years; tool associated with this time period include those of the Mousterian tool technology used by Homo neanderthalenis that deal with hunting, gathering and agricultural activities.
see Middle Paleolithic.
the minimum number of individuals (MNI) that would have had to have died in order to make up the assemblage. MNI is calculated by dividing the number of time each element occurs in an assemblage by the number of times it occurs in the skeleton of a single living individual. The MNI is the highest of the resulting numbers.
an epoch in the Cenozoic era on the geologic time that approximately dates from 23 million years ago to 5.3 million years ago; marked by the evolution of apes.
deoxyribonucleic acid found within mitochondria.
see minimum number of individuals.
in cladistics, a clade (i.e., group) that consists of a single common ancestor and all its descendants. Holophyletic is often preferred to its synonym monophyletic.
a tool industry that approximately dates from 250,000 years ago to 40,000 years ago; associated with Homo neanderthalensis and possibly early Homo sapiens; characterized by blades and burins prepared using the Levallois prepared-core technique. The tool kit also contained side scrapers and spear points.
see mitochondrial DNA.
a change in the genetic code as a result of an error during DNA reproduction.
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