1. Adolf Naef was a Swiss zoologist and palaeontologist who worked on cephalopods and systematics.

1. Adolf Naef was a Swiss zoologist and palaeontologist who worked on cephalopods and systematics.
Adolf Naef graduated in 1908 and went on to pursue a PhD under the guidance of Arnold Lang, a former professor of Jena University and close friend of Ernst Haeckel as well as a long-time associate of Anton Dohrn.
Adolf Naef visited Dohrn's Zoological Station in Naples, Italy in 1908.
In 1910, Adolf Naef accepted a position of a permanent visiting scientist at the Zoological Station, where he began work on a cephalopod monograph that had been started by Giuseppe Jatta.
Adolf Naef took a concurrent teaching position at the University of Zurich, working remotely from Naples.
In 1927 Adolf Naef became Professor of Zoology at the University of Cairo, and in 1929 Director of the Zoological Department.
Adolf Naef expected this position to be a temporary one until he could find a job at a European university.
Adolf Naef planned a comprehensive Textbook of Vertebrate Zoology, but his work on the project was stifled by isolating governmental regulations during World War II.
Adolf Naef returned to Zurich in 1949 and died on May 11; few obituaries were published.
Adolf Naef was married three times: first, to Elisabeth Rosenbaum on March 30,1907.
In 1909, Elisabeth began studying medicine at the University of Zurich; she and Adolf Naef divorced in 1910.
Adolf Naef argued that direct morphological observations form the necessary basis for systematics.
Adolf Naef described his approach as Systematische Morphologie, the details of which he sketched out as early as 1913:.
Towards the end of his career, Adolf Naef published several detailed accounts of Systematische Morphologie, including a succinct summary in the widely read 2nd edition of the Handworterbuch der Naturwissenschaften.
Adolf Naef aimed to construct the first complete phylogeny for any single group, a purpose that cephalopods served well.
Adolf Naef found that cephalopod embryology and paleontology were quite amenable to study.
Adolf Naef found evidence for fins on belemnites almost a hundred years before their existence was finally proven, and he was the first to propose that modern squids evolved directly from belemnites.