Helmut Kiderlen
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Helmut Kiderlen (3 March 1905 in Ulm – 8 October 1995 in Freiburg im Breisgau)[1] was a German geologist.

He is remember mostly as the first person to suggest the hypothesis about cnidarian affinities of conulariids. In 1937 he published a paper in which he presented evidence that this extinct group, enigmatic for his predecessors,[2] either belonged to or was closely related to scyphozoans.[3] This hypothesis is currently generally accepted.[4][5][6]
Holoconularia kiderleni Hergarten, 1985, a Devonian conulariid, was named in his honour.[7]