Abstract

In the Callovian mudstones associated with the Christian Malford Lagerstatte (Wilby et al. , 2008), exceptionally large numbers of statoliths have been found in normally prepared (White Spirit method of Brasier, 1980) micropalaeontology residues. Statoliths, like the otoliths in teleost fishes, are aragonitic ‘stones’ found in the stato-acoustic organs (statocysts) of squid. While statoliths are relatively well known in the biological literature (Lipinski, 1986, 1997; Hanlon & Messenger, 1996) they remain almost undescribed in the field of micropalaeontology. Otoliths are the stato-acoustic organs of bony (teleost) fish and can be well preserved as fossils (Frost, 1924, 1926; Rundle, 1967; Stinton & Torrens, 1968; Lowenstein, 1971; Patterson et al. , 1993; Patterson, 1998, 1999; Hart et al. , 2006, 2009). In some of these accounts of Jurassic otoliths there are a number of illustrations …

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