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dc.contributor.author David J. en_US
dc.date.accessioned 2011-05-24T11:29:07Z
dc.date.available 2011-05-24T11:29:07Z
dc.date.issued 2009-12-07 en_US
dc.identifier http://dx.doi.org/10.1080/00173130903340236 en_US
dc.identifier.citation Batten , D J 2009 , ' An unusual megaspore of uncertain systematic affinity from Lower Cretaceous deposits in south-east England and its biostratigraphic and palaeoenvironmental significance ' Grana , vol 48 , no. 4 , pp. 270-280 . , 10.1080/00173130903340236 en_US
dc.identifier.other PURE: 161771 en_US
dc.identifier.other dspace: 2160/6795 en_US
dc.identifier.uri http://hdl.handle.net/2160/6795
dc.description.abstract An unusual megaspore has been recorded from beds within the Weald Clay Group of south-east England. Described as Clockhousea capelensis gen. et sp. nov., it is characterised by having a thick outer layer of exine consisting of closely packed columnar to clavate elements with constricted bases attached to a perforated inner layer and a sculpture that ranges from having the appearance of a negative reticulum through closely spaced verrucae to a mixture of verrucate and essentially baculate elements, all of which are surface manifestations and extensions of the underlying structure. These characters do not readily indicate a systematic relationship with any known heterosporous plant genus or family. The localised occurrence and relative abundance of the spores in a few beds suggest that some of the parent plants grew close to water bodies where they were deposited and preserved. Their recovery from sediments of late Hauterivian-early Barremian age indicates that the species has potential as a biostratigraphic marker in the upper Wealden succession of southern England and perhaps elsewhere. en_US
dc.format.extent 11 en_US
dc.relation.ispartof Grana en_US
dc.title An unusual megaspore of uncertain systematic affinity from Lower Cretaceous deposits in south-east England and its biostratigraphic and palaeoenvironmental significance en_US
dc.contributor.pbl Aberystwyth University en_US
dc.contributor.pbl River Basin Dynamics and Hydrology en_US


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