death_place death_date birth_place nationality fields workplaces birth_date article_title name
versailles , france 30 july 1942 marseille , france french embryology ichthyology zoology muséum national d'histoire naturelle 20 december 1861 louis roule
 louis roule
louis roule

louis roule -lrb- 20 december 1861 -- 30 july 1942 -rrb- was a french zoologist born in marseille .
in 1881 he obtained a degree in natural sciences at marseille , followed by his doctorate of sciences -lrb- 1884 -rrb- at paris with a thesis on ascidians of coastal provence .
from 1885 he worked as a lecturer at the faculty of sciences in toulouse , where in 1892 he became a professor .
during the previous year -lrb- 1891 -rrb- , he earned a doctorate in medicine .
in 1910 he succeeded léon vaillant -lrb- 1834 -- 1914 -rrb- as chair of zoology -lrb- reptiles and fish -rrb- at the `` muséum national d'histoire naturelle '' in paris , a position he would hold until 1937 .
during this time period he was also an instructor at the `` institut national agronomique '' -lrb- from 1925 -rrb- , and director of the laboratory of ichthyology at the '' École pratique des hautes études '' -lrb- ephe -rrb- .
roule 's early research dealt largely with invertebrates .
later his focus turned to ichthyology , of which he had the opportunity to take inventory of large collections of marine specimens .
he analyzed collections gathered from prince albert i of monaco , as well as specimens obtained from the antarctic expeditions of jean-baptiste charcot -lrb- 1867 -- 1936 -rrb- .
roule was the first scientist to describe `` grimaldichthys profundissimus '' , a fish species found at a depth of over six kilometers .
he had an avid interest in the work of french naturalists of previous generations , publishing books on buffon , daubenton , lamarck and cuvier .
roule was also the author of well regarded works in the fields of embryology and comparative anatomy .
