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Collection of Nummulite and Assilina axial preparations of H. Schaub and C.G. Adams (incompleted study).

 

In 1991 G. Kleiber had published his PhD Thesis, where he had shown the value of axial sections in differentiating the various linneages of nummulites, something that Hans Schaub had somewhat neglected in his monumental monograph of 1981.

 

Geoff Adams, a larger foraminiferal worker at the Natural History Museum in London, was impressed with Kleiber's work and thought of the stratigraphic potential of axial sections of nummulites. In approaching Hans Schaub, Adams started a large loan of isolated nummulites from the collections held at the NMB for this endeavour. Hans Schaub had not only been involved in a formal supervisory role but had a great interest in this research because of the above mentioned reason. The isolated specimens were prepared and cut to thin sections by Richard Hodgkinson, who was curator and technician at the NMB at that time.

 

Geoff Adams died in 1995, almost at the same time as Hans Schaub. With Adams' death this project saw the sudden end of any serious attempt to complete the project and an uncompleted draft manuscript of Geoff Adams was found on his computer at the London Museum entitled "On the interpretation of axial sections of Assilina and Nummulites". The loaned and sectioned material was returned to the NMB in 2006, while the manuscript, has been left in London (status: December 2006; information obtained from John Whittacker, by email communication, 15 December 2006).

 

The collection includes a large collection of axial thin sections from nummulites and assilines from the Ilerdian (Upper Paleocene), Cuisian (lower Eocene), and Lutetian (Middle Eocene), from various locations, that Hans Schaub visited in the European Tethys (e.g. sections in Italy, France, Spain, Bavaria, etc). The collection includes also isolated specimens, that were selected from the Schaub collection for the purpose of sectioning and study.

 

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