Gustave Frédéric Dollfus Explained

Gustave Frédéric Dollfus (26 November 1850, Paris  - 6 November 1931, Paris)^[1] was a French geologist and malacologist. He was the father of parasitologist Robert-Philippe Dollfus (1887–1976).

In 1868–70 he studied geology under Edmond Hébert at the Sorbonne, then continued his education in Lille as a pupil of Jules Gosselet. In 1879 he began work at the Service de la carte géologique de la France (Department of French geological cartography).^[2]

He was twice chosen as president of the Société de géologie de France (1896 and 1916).^[3] In 1923 he was awarded the Lyell Medal by the Geological Society of London.^[4]

His name is associated with several species of mollusk, an example being Chrysallida dollfusi, a sea snail described by Wilhelm Kobelt in 1903.^[5] The World Register of Marine Species lists 272 marine species named by Dollfus.^[6]

Research

Among his various geological studies was analysis of the Cretaceous and Tertiary in the Cotentin Peninsula (mid-1870s). From his research of the Aquitanian stage, he published an important essay titled "Essai sur l'étage Aquitanien" (1909). With Philippe Dautzenberg, he was co-author of the voluminous "Conchyliologie du Miocéne moyen du Bassin de la Loire" (Conchology in regard to the Middle Miocene of the Loire basin). Other significant works by Dollfus include:

• Principes de géologie transformiste, application de la théorie de l'évolution à la géologie, 1874 - Principles of geological transformism, application of the theory of evolution to geology.
• Essai sur l'extension des terrains tertiaires dans le bassin anglo-parisien, 1880 - Essay on the extension of Tertiary terrain in the Anglo-Paris basin.
• Esquisse des terrains tertiaires de la Normandie, 1880 - Sketch involving the Tertiary terrain of Normandy.
• French: Descriptions de coquilles nouvelles des faluns de la Touraine, 1888 - Descriptions of new coquilles in the faluns of Touraine.
• Recherches géologiques sur les environs de Vichy (Allier), 1894 - Geological research on the environs of Vichy (Allier).
• Mollusques tertiaires du Portugal, 1909 - Terrestrial mollusks of Portugal.^{[2] [7]}

Notes and References

1. Jean-Jacques Amigo, « Dollfus (Gustave, Frédéric) », in Nouveau Dictionnaire de biographies roussillonnaises, vol. 3 Sciences de la Vie et de la Terre, Perpignan, Publications de l'olivier, 2017, 915 p.
2. http://www.annales.org/archives/cofrhigeo/dollfus Annales des Mines
3. http://www.idref.fr/067065244 IDREF.fr
4. http://www.geolsoc.org.uk/About/History/Award-Winners-Since-1831/Lyell-Medal The Geological Society
5. http://www.tmbl.gu.se/libdb/taxon/personetymol/petymol.d.html Petymol
6. http://www.marinespecies.org/aphia.php?p=taxlist WoRMS: Species named by Dollfus
7. http://classify.oclc.org/classify2/ClassifyDemo?search-author-txt=%22Dollfus%2C+Gustave+Fr%C3%A9d%C3%A9ric%2C+1850-%22 OCLC Classify