Rhinogradentia

Rhinogradentia is a fictitious order of extinct shrew-like mammals invented by German zoologist Gerolf Steiner. Members of the order, known as rhinogrades or snouters, are characterized by a nose-like feature called a "nasorium", which evolved to fulfill a wide variety of functions in different species. Steiner also created a fictional persona, naturalist Harald Stümpke, who is credited as author of the 1961 book Bau und Leben der Rhinogradentia (translated into English in 1967 as The Snouters: Form and Life of the Rhinogrades). According to Steiner, it is the only remaining record of the animals, which were wiped out, along with all the world's Rhinogradentia researchers, when the small Pacific archipelago they inhabited sank into the ocean due to nearby atomic bomb testing.

Successfully mimicking a genuine scientific work, Rhinogradentia has appeared in several publications without any note of its fictitious nature, sometimes in connection with April Fools' Day.

Rhinogradentia, their island home of Hy-yi-yi, zoologist Harald Stümpke, and a host of other people, places, and documents are fictional creations of Gerolf Steiner (1908–2009), a German zoologist. Steiner is best known for his fictional work as Stümpke, but he was an accomplished zoologist in his own right. He held a professorship at the University of Heidelberg and later the Technical University of Karlsruhe, where he occupied the department chair from 1962 to 1973.

Steiner was also interested in illustration, and in 1945 drew a picture for one of his students as thanks for some food. He took inspiration from a short nonsense poem by Christian Morgenstern, The Nasobame (Das Nasobēm) about an animal that walked using its nose. He took to the drawing, made a copy for himself, and later incorporated the creatures into his teaching. According to Bud Webster, Steiner's motivation for writing a book about them was instructional, to illustrate "how animals evolve in isolation", but Joe Cain speculates that the success of the joke may have led to a teaching and writing career based on that rather than the other way around.

Steiner's fictional author, credited as "quondam curator of the Museum of the Darwin Institute of Hy-yi-yi, Mairuwili", provides a very detailed account of the order and individual species, written in a dry, scholarly tone. Michael Ohl wrote that the book is written "in truly amusing attention to detail and using what is immediately recognizable as a practiced scientific patois". The evidently expert voice of the author, his competent writing, and apparent familiarity with conventions of academic literature set the work apart as a rare example at the intersection of fiction and scholarship. Steiner credits himself by name as illustrator of the book, and explains how that role led him to possess the only remaining record of Rhinogradentia.

According to Stümpke, Rhinogradentia were native to Hy-yi-yi, a small Pacific archipelago comprising eighteen islands: Annoorussawubbissy, Awkoavussa, Hiddudify, Koavussa, Lowlukha, Lownunnoia, Mara, Miroovilly, Mittuddinna, Naty, Nawissy, Noorubbissy, Osovitissy, Ownavussa, Owsuddowsa, Shanelukha, Towteng-Awko, and Vinsy. The islands occupied 1,690 km² (650 sq mi) and the archipelago's highest peak, 2,230 m (7,320 ft), was on its main island, Hiddudify (Hy-dud-dye-fee).

The first description of Hy-yi-yi published in Europe was that of Einar Pettersson-Skämtkvist, a Swedish explorer who arrived in Hiddudify by chance in 1941, after escaping from a Japanese prisoner-of-war camp. Each of the islands was home to distinctive fauna, dominated by Rhinogradentia, the only mammals other than humans and one species of shrew. In the time after the war, a number of scientists took interest in the rhinogrades and began formal research into their physiology, morphology, behaviors, and evolution.

In the late 1950s, nearby nuclear weapons testing by the United States military accidentally caused all of the islands of Hy-yi-yi to sink into the ocean, destroying all traces of the rhinogrades and their unique ecosystem. Also killed were all the world's Rhinogradentia researchers, who were attending a conference on Hy-yi-yi at the time. The book's epilogue, credited to Steiner in his capacity as the book's illustrator, explains that Stümpke had sent the book's materials to Steiner to serve as the basis for illustrations in preparation for publication. Following the disaster, it is the only remaining record of the subjects it describes.