Johan Wilhelm Dalman, Date of Birth, Date of Death

    

Johan Wilhelm Dalman

Swedish physician and naturalist

Date of Birth: 04-Nov-1787

Date of Death: 12-Jul-1828

Profession: naturalist, physician, lepidopterist, university teacher, paleontologist, botanist

Nationality: Sweden

Zodiac Sign: Scorpio


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About Johan Wilhelm Dalman

  • Johan Wilhelm Dalman (November 4, 1787 in Hinseberg, VĂ€stmanland – July 11, 1828 in Stockholm) was a Swedish physician and a naturalist.
  • He first studied at Christiansfeld in Schleswig-Holstein then at the University of Lund and the University of Uppsala.
  • He was mainly interested in entomology and botany.
  • He received his degree in 1816 then his doctorate in 1817 from the University of Uppsala.
  • Dalman became librarian of the Royal Swedish Academy of Sciences, a member of the Academy in 1821, then director of the zoological garden, then demonstrator in botany at the Karolinska Institutet of Stockholm. Dalman's main interest lay in entomology and botany, but he also became involved in the systematics and taxonomy of trilobites.
  • In 1771 Johann Ernst Immanuel Walch (1725-1778) first used the term trilobite.
  • Researchers had tried to link trilobites to extant groups such as chitons and various arthropods.
  • Before Walch’s work this had led to great confusion.
  • By 1820 the term “trilobite” was widely used, except by Dalman who suggested the term “palaeades”.
  • Dalman had drawn attention to the weakly defined axial furrows in the Ordovician trilobite Nileus.
  • The trilobite genus Dalmanites in the order Phacopida was named in his honour.
  • Dalmanites was widespread during the Ordovician and Silurian.He was the author of De narcoticis observations (1816), Förteckning paa Skrifter i medicinska vetenskaperna, samt i kemi och Naturalhistorie, utgifne i Sverige Ă„ren 1817, 1818 and 1819 (1820), Om Palaeaderna, eller de sĂ„ kallade Trilobiterna (1827) and very many works on entomology. Entomology 1821-1825 1818, NĂ„gra nya Genera och Species af Insecter beskrifna.
  • Kungliga Svenska Vetenskapsakademiens Handlingar 39:69-89 Försök till UppstĂ€llning af Insect-familjen Pteromalini, i synnerhet med afseen de pĂ„ de i Sverige funne Arter.
  • Kungliga Svenska Vetenskapsakademiens Handlingar 41(1):123-174, 177-182, tab VII-VIII 1820, Försök till UppstĂ€llning af Insect-familjen Pteromalini, i synnerhet med afseen de pĂ„ de i Sverige funne Arter.
  • (FortsĂ€ttning) Kungliga Svenska Vetenskapsakademiens Handlingar 41(2):340-385 1822, FortsĂ€ttning af Svenska Pteromalinernes beskrifning.
  • Kungliga Svenska Vetenskapsakademiens Handlingar 43:394-403 1823, Analeceta Entomologica :viii+108pp, 4 pls Stockholm 1825, Om nĂ„gra Svenska arter af Coccus, samt de inuti dem förekommande parasit Insekter.
  • Kungliga Svenska Vetenskapsakademiens Handlingar 46:350-374

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