Question: Information: - Psarolepis ("psrolepis", from Greek 'speckled' and 'scale') is a genus of extinct lobe-finned fish which lived around 397 to 418 million years ago (Pridoli to Lochkovian stages). Fossils of "Psarolepis" have been found mainly in South China and described by paleontologist Xiaobo Yu in 1998. It is not known certainly in which group "Psarolepis" belongs, but paleontologists agree that it probably is a basal genus and seems to be close to the common ancestor of lobe-finned and ray-finned fishes. In 2001, paleontologist John A. Long compared "Psarolepis" with Onychodontiform fishes and refer to their relationships. - Dr. Xiaobo Yu is a Chinese palaeontologist and professor on biological sciences . Yu is credited with first describing the lobe - finned fish Psarolepis romeri , a transitional species between fish and amphibians . Yu is currently a professor at Kean University in Union , New Jersey . - John Albert Long (born 1957) is an Australian paleontologist who is currently Strategic Professor in Palaeontology at Flinders University in Adelaide, South Australia. He was previously the Vice President of Research and Collections at the Natural History Museum of Los Angeles County. He is also an author of popular science books. His main area of research is on the fossil fish of the Late Devonian Gogo Formation from northern Western Australia. It has yielded many important insights into fish evolution, such as Gogonasus and Materpiscis, the later specimen being crucial to our understanding of the origins of vertebrate reproduction. His love of fossil collecting began at age 7 and he graduated with PhD from Monash University in 1984, specialising in Palaeozoic fish evolution. He held postdoctoral positions at the Australian National University (198485, Rothmans Fellow), The University of Western Australia (198687, Queen Elizabeth II Award) and The University of Tasmania (198889, ARC Fellow) before taking up a position as Curator in Vertebrate Palaeontology at the Western Australian Museum (19892004), and then as Head of Sciences at Museum Victoria (20042009). What is the relationship between 'xiaobo yu' and 'paleontologist'?
Answer:
occupation