Prof Erik Helge Osvald StensiöForMemRS[1]HFRSE (2 October 1891 – 11 January 1984), né Andersson, was an influential Swedishpaleozoologist and founder of the so-called "Stockholm School"[2]ofvertebrate paleontology. He later took his new surname, Stensiö, from his place of origin and is occasionally referred to with both names (asErik Andersson Stensiö, Erik A. StensiöorErik A:son Stensiö)
Erik Helge Oswald Andersson, as his original name was, was born in the village of Stensjö by in Döderhult parish in Kalmar County, the son of Johan Fredrik Andersson (d.1907), a farmer, and his wife, Otilia Maria Erlandson (d.1940). He was educated at Linköping Gymnasium. He then studied science at the University of Uppsala, graduating BSc in 1912.[3]
He received his Ph.D. and a docentship in paleontology from Uppsala University in 1921 and became professor and keeper at the Zoopaleontological (later called the Paleozoological) department of the Swedish Museum of Natural HistoryinStockholm in 1923, a position he held until his retirement in 1959.
Stensiö specialized in the anatomy and evolution of "lower" vertebrates. His studies of placoderms showed them to be related to modern sharks (though, now, placoderms are considered to be the sister group of all jawed vertebrates, in addition to sharks). His first major work, Triassic fishes from Spitzbergen (part I: Vienna 1921; part II: Stockholm 1925), was based on material collected during his expeditions to Spitzbergen in 1912, 1913, 1915 and 1916. For his work, The Downtonian and Devonian Vertebrates of Spitzbergen, Part I, Stensiö was awarded the Daniel Giraud Elliot Medal from the National Academy of Sciences in 1926.[4]
In 1917 he changed his name from Andersson to Stensiö, adopting the name of his home-town.
He founded the so-called "Stockholm School"[2] in paleozoology, continued notably by his successors in the professorship, Erik Jarvik and Tor Ørvig.
Andersson, E. (1916). "Beschreibung einiger Fischreste aus Madagaskar und Siam". Bulletin of the Geological Institution of the University of Upsala (in German). 13: 227–232.
Andersson, E. (1916). "Über einige Trias-Fische aus der Cava Trefontane, Tessin". Bulletin Géologique (in German). 15: 13–33.
Stensiö, E. (1918). "Notes on a crossopterygian fish from the Upper Devonian of Spitzbergen". Bulletin of the Geological Institutions of the University of Upsala. 16: 115–124.
Stensiö, E. (1918). "Notes on some fish remains collected at Hornsund by the Norwegian Spitzbergen expedition in 1917". Norsk Geologisk Tidsskrift. 5: 75–78.
Stensiö, E. (1919). "Einige Bemerkungen über die systematische Stellung von Saurichthys mougeoti Agassiz". Senckenbergiana (in German). 1: 177–181.
Stensiö, E. (1921). Triassic fishes from Spitzbergen 1. Wien: Adolf Holzhausen. pp. xxviii+307.
Stensiö, E. (1925). "On the head of the macropetalichthyids, with certain remarks on the head of the other arthrodires". Chicago Field Museum of Natural History Publications 232, Geological Series. 4 (4): 87–197.
Stensiö, E. (1925). "Triassic fishes from Spitzbergen 2". Kungliga Svenska Vetenskapsakademiens Handlingar. 3: 1–261.
Stensiö, E. (1927). "The Downtonian and Devonian vertebrates of Spitsbergen. Part I, Family Cephalaspidae". Skrifter Om Svalbard og Nordishavet. 12: 1–391.
Stensiö, E. (1932). "Triassic fishes from East Greenland 1–2". Meddelelser om Grønland. 83: 1–298.
Stensiö, E. (1937). "On the Devonian coelacanthids of Germany with special reference to the dermal skeleton". Kungliga Svenska Vetenskapsakademiens Handlingar, Series 3. 16 (4): 1–56.
Stensiö, E. (1947). "The sensory lines and dermal bones of the cheek in fishes and amphibians". Kungliga Svenska Vetenskapsakademiens Handlingar, Series 3. 22 (1): 1–195.
Stensiö, E. (1958). "Les cyclostomes fossiles ou ostracodermes. I". In P.-P. Grassé (ed.). Traité de Zoologie XIII, 1 (in French). Paris: Masson et Cie. pp. 173–452.
Stensiö, E. (1961). "Permian vertebrates". In G. O. Raasch (ed.). Geology of the Arctic 1. Toronto: University of Toronto Press. pp. 231–247.
Stensiö, E. (1962). "Origine et nature des écailles placoides et des dents". Colloques Internationaux du Centre National de la Recherche Scientifique (in French). 104: 75–85.
Stensiö, E. (1963). "Anatomical studies on the arthrodiran head. Part I". Kungliga Svenska Vetenskapsakademiens Handlingar, Series 3. 9 (2): 1–147.
Stensiö, E. (1969). "Elasmobranchiomorphi; Placodermata; Arthrodires. I". In J. Piveteau (ed.). Traité de Paléontologie IV, 2 (in French). Paris: Masson et Cie. pp. 71–692.
