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RE: Cretaceous, yes -- Netherlands, yes -- marsupial, unlikely




The same issue of the Journal of Mammalian Evolution also has an article on a new Early Cretaceous mammal from Australia. This critter, named _Kryoryctes cadburyi_, is known from a single humerus, described as 'tachyglossid-like' - although the authors are reluctant to jump to the conclusion that it belongs to a monotreme. The humerus does seem adapted to digging, as in modern echidnas (and many other furry critters). The name _Kryoryctes_ means 'cold-temperature digger', and the species name honors the Cadbury-Schweppes company.


Reference:

Peter A. Pridmore, Thomas H. Rich, Pat Vickers-Rich, and Petr P. Gambaryan (2005). A tachyglossid-like humerus from the Early Cretaceous of South-Eastern Australia J. Mammal. Evol. 12: 359-378.




James E. Martin, Judd A. Case, John W. M. Jagt, Anne S. Schulp & Eric W. A. Mulder: A New European Marsupial Indicates a Late Cretaceous High-Latitude Transatlantic Dispersal Route, Journal of Mammalian Evolution 12(3/4), 495 -- 511 (December 2005)