Representative pregnancy durations (days), neonatal and adult brain and body weights (grams), and advancement factors for three of the great apes and humans. Data based on Sacher, G.A., & Staffeldt, E.F. (1974). Relation of gestation time to brain weight for placental animals: implications for the theory of vertebrate growth. American Naturalist, 108, 593-615.

See Altricial, Central nervous system (CNS), Cerebral cortex or pallium), Cerebral cortex (functions), Cerebrospinal fluid (CSF), Delivery position (or presentation), Diencephalon, Meninges, Mesencephalon, Metabolism, Metencephalon, Mind-body problem, Modularity, Myelin, Neuroblasts, Newborn, Neuron, Precocial, Prosencephalon, Telencephalon