This is a preview. Log in through your library . Abstract The configuration of the phalanges and the number of presacral vertebrae vary within and among seven populations representing the five species ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Here’s something I’ve come back to on a few ...

1. A comparative study was made of the morphological changes occurring in the osteology of the limbs and girdles of the degenerate, snake-like lizards. For purposes of comparison a morphological ...

SOME suggestive results, which may possibly turn out to have a bearing on the question of the existence of evolutionary tendencies in modern man, emerge from an examination by Dr. T. D. Stewart, of ...

Misidentified as a rhizodont fish on its discovery in 1971, recent preparation has revealed the specimen to be a tetrapod of about 650 mm in presacral length, lacking only a few parts of the skull, ...

THIS paper deals with a series of presacral neurectomies performed for relief of dysmenorrhea. A total of 111 operations have been done at the Massachusetts General Hospital and the Palmer Memorial ...