Caccobius histeroides

Some of these temperate beetle assemblages are remarkably similar to one another especially in their inclusion of diagnostic exotic species. Others, though indicative of a temperate climate, exhibit consistent differences so that the 14 assemblages clearly divide themselves into two groups; Group (a) and Group (b), based on differences in their species composition and abundance. Group (a) beetle faunas, from seven sites, may be termed “classic” Ipswichian (Eemian) since they closely resemble the assemblage from the type site at Bobbitshole near Ipswich and have unimpeachable stratigraphical contexts. All of these faunas can with confidence be attributed to an early phase of Oxygen Isotope Sub-Stage 5e. Group (b) beetle faunas, also from seven sites, are very different in their specific composition and are more of a puzzle because they include some fossil assemblages from deposits that have, in the past, been attributed to the latter part of the Ipswichian Interglacial and others that are undoubtedly from stratigraphical deposits that are earlier than the Ipswichian and which have been correlated with Oxygen Isotope Stage 7. It is with the deposits yielding Group (b) faunas that the greatest controversy arises. On-line appendix available at http:///locate/quascirev

Caccobius histeroides

caccobius histeroides

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