20th-century German geologists

Paul Theodor Range (1 May 1879 in Lübeck – 29 August 1952 in Lübeck) was a German geologist and naturalist.
He studied natural sciences at the universities of Würzburg and Leipzig, receiving his doctorate in 1903. From 1906 to 1914 he worked as a government geologist in German South-West Africa, and afterwards performed scientific studies in the Sinai Peninsula. From 1921 he gave lectures in geology at the University of Berlin, becoming an associate professor in 1934. In 1936, he was named president of the Deutschen Geologischen Gesellschaft.Range is commemorated in the scientific name of the Namib sand gecko (Pachydactylus rangei), which was described as a species new to science by herpetologist Lars Gabriel Andersson in 1908.

Karl Erich Andrée (10 March 1880, in Münder am Deister – 18 August 1959, in Göttingen) was a German geologist and paleontologist.
He studied chemistry at the Technical University of Hannover and mineralogy, geology, paleontology and zoology at the University of Göttingen, receiving his doctorate in 1904. At Göttingen, he was encouraged by Adolf von Koenen to write his dissertation-thesis on the geology of Iburg. Later on, he worked as an assistant at the Mineralogical-Geological Institute of the Bergakademie in Clausthal (1906–08) and at the Technical University of Karlsruhe (1908–10).
In 1910 he obtained his habilitation from the University of Marburg, and five years later, became an associate professor of geology and paleontology at the University of Königsberg. In 1921 he attained a full professorship, and in 1930/31 he served as university rector. At Königsberg, he was also director at the Geological-Paleontological Institute and in charge of the amber collections. From 1946 onward, he taught classes on geology at the University of Göttingen. He was the author of over 125 scientific papers.