Gualtherus Carel Jacob Vosmaer (Oud-Beijerland, August 19, 1854 - Leiden, September 23, 1916 ) was a Dutch zoologist.

Biography

GCJ Vosmaer was born in 1854 in

Oud-Beijerland Oud-Beijerland () is a town and former municipality in the western Netherlands, in the province of South Holland, now a part of the Hoeksche Waard municipality. With a population of 24,575 in 2020, it is the most populous town of the Hoeksche Waard ...

, where his father, the poet and critic

Carel Vosmaer Carel Vosmaer (20 March 1826 – 12 June 1888) was a Dutch poet and art critic, born at The Hague. He wrote under the pseudonym Flanor. Life He studied law at the University of Leiden, obtaining a degree in 1851, and was for many years Deputy ...

was then a clerk at the subdistrict court. He studied in

The Hague The Hague ( ; nl, Den Haag or ) is a city and municipality of the Netherlands, situated on the west coast facing the North Sea. The Hague is the country's administrative centre and its seat of government, and while the official capital of ...

and subsequently at the

University of Leiden Leiden University (abbreviated as ''LEI''; nl, Universiteit Leiden) is a public research university in Leiden, Netherlands. The university was founded as a Protestant university in 1575 by William, Prince of Orange, as a reward to the city of Le ...

, where he obtained his doctorate in 1880 with a thesis on sponges ("'' Leucandra aspera'' and the Canal System of Sponges"). In 1882 he became

Anton Dohrn Felix Anton Dohrn FRS FRSE (29 December 1840 – 26 September 1909) was a prominent German Darwinist and the founder and first director of the first zoological research station in the world, the Stazione Zoologica in Naples, Italy. He worked ...

's assistant at his zoological station in Naples. In 1889 he returned to the Netherlands and became assistant to Professor

Ambrosius Hubrecht Ambrosius Arnold Willem Hubrecht (2 March 1853, in Rotterdam – 21 March 1915, in Utrecht) was a Dutch zoologist. Hubrecht studied zoology at Utrecht University with Harting and Donders, for periods joining Selenka in Leiden and later Erlange ...

in Utrecht. Later he became a private teacher and lecturer in Utrecht and in 1904 he became professor of zoology in Leiden.

Work

Vosmaer was a specialist in the field of sponges, describing many species. In Naples he examined the sponges in the Bay of Naples. issued posthumously in 1933-1935 He also described the sponges collected during the ''Willem Barents'' expedition to the North Atlantic and Arctic Ocean in 1880-1881 (in this he described, among other things, the genus ''

Artemisina ''Artemisina'' is a genus of sponges belonging to the family Microcionidae. The genus has cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world ...

'') and during the Siboga expedition of 1899-1900. The genus '' Vosmaeropsis'' Dendy, 1893, is named for him.

References

{{DEFAULTSORT:Vosmaer, Gualtherus Carel Jacob 1854 births 1916 deaths 19th-century Dutch zoologists Spongiologists 20th-century Dutch zoologists