The Brain Distinguishes Man from Other Mammals

In Man the brain presents an ascensive step in development, higher and more strongly marked than that by which the preceding subclass was distinguished from the one below it. Not only do the cerebral hemispheres overlap the olfactory lobes and cerebellum, but they extend in advance of the one, and further back than the other. Their posterior development is so marked, that anatomists have assigned to that part the character of a third lobe; it is peculiar to the genus Homo, and equally peculiar is the 'posterior horn of the lateral ventricle,' and the 'hippocampus minor,' which characterize the hind lobe of each hemisphere. The superficial grey matter of the cerebrum, through the number and depth of the convolutions, attains its maximum of extent in Man. Peculiar mental powers are associated with this highest form of brain, and their consequences wonderfully illustrate the value of the cerebral character; according to my estimate of which, I am led to regard the genus Homo, as not merely a representative of a distinct order, but of a distinct subclass of the Mammalia, for which I propose a name of 'ARCHENCEPHALA.'


Proposing the name "Archencephala" to taxonomically distinguish it.

Folksonomies: evolution taxonomy archencephala

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genus Homo (0.917185 (neutral:0.000000)), Peculiar mental powers (0.890468 (neutral:0.000000)), Brain Distinguishes Man (0.866410 (neutral:0.000000)), superficial grey matter (0.788709 (negative:-0.487431)), olfactory lobes (0.550998 (negative:-0.207460)), distinct subclass (0.546068 (negative:-0.244643)), hind lobe (0.544400 (neutral:0.000000)), ascensive step (0.520163 (neutral:0.000000)), cerebral hemispheres (0.517710 (negative:-0.207460)), lateral ventricle (0.505705 (negative:-0.308646)), posterior development (0.500298 (negative:-0.225193)), distinct order (0.444883 (neutral:0.000000)), cerebral character (0.425277 (positive:0.636495)), highest form (0.416204 (neutral:0.000000))

posterior horn:Anatomy (0.987453 (negative:-0.308646)), representative:JobTitle (0.614978 (neutral:0.000000))

Cerebral cortex (0.987945): dbpedia | freebase
Brain (0.833149): dbpedia | freebase | opencyc
Cerebrum (0.685394): dbpedia | freebase | opencyc
Central nervous system (0.518014): dbpedia | freebase | opencyc
Hippocampus (0.503588): dbpedia | freebase | opencyc
Mammal (0.494255): dbpedia | freebase | opencyc
Neuroanatomy (0.476606): dbpedia | freebase
Species (0.457427): dbpedia | freebase | opencyc

 On the Characters, Principles of Division, and Primary Groups of the Class MAMMALIA
Periodicals>Journal Article:  Owen, Sir Richard (1858), On the Characters, Principles of Division, and Primary Groups of the Class MAMMALIA, Journal of the Proceedings of the Linnean Society of London , (1858), 2, 19-20. , Retrieved on 2012-06-09