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<span style="font-family:arial, helvetica, sans-serif;font-size:small;">Sedimentological and palaeontological characteristics of the fossiliferous clay of Puy−Puy indicate a coastal depositional environment with significant continental inputs (Néraudeau et al. 2005). First, sand and clay alternations of the sub−unit A2 (Fig. 2) are characteristic of an estuarine environment. The rip− ple marks and the arthropod tracks observed in the sandstones (GB in Fig. 1) overlying the insect−bearing clay are characteris− tic of a sandy tidal beach. The “azoic” sand with large cross bed− dings (sub−unit A1) preceding the clay with plants and arthro− pods is typical of a fluviatil series (Néraudeau et al. 2005). Moreover, a rich floristic assemblage is associated to the fossil arthropod imprints. Ferns, conifers, and angiosperms are highly diversified (more than thirty forms), and usually represent dis− tinct taxa compared to other Late Albian and Early Cenomanian beds bearing plant compressions of the same region (Coiffard et al. 2004; Gomez et al. 2004; Le Diourion 2005; BG unpublished data). The particular high diversity and plant association of the P1/P2 beds at Puy−Puy quarry may correspond to freshwater marsh or pond in floodplain or mouth estuary. Fossil wood is relatively uncommon, with two identified taxa (Agathoxylon and Podocarpoxylon) (Perrichot 2005), but fossil leaf imprints are very abundant, with the outstanding abundance and diver− sity of angiosperms (e.g., Myrtophyllum cf. angustum), the pres− ence of Araucariaceae or Podocarpaceae (e.g., Dammarophyl− lum), Cupressaceae–Taxodiaceae (e.g., Glenrosa sp.), other coniferales (e.g., Geinitzia reichenbachii), pteridophytes (e.g., cf. Osmunda cretacea), ginkgoales (e.g., Nehvizdya andega− vense) (Le Diouron 2005; Néraudeau et al. 2005). Thus the life environment of Enigmaeshna deprei was probably an estuarine forest context combining a mosaic pattern of marine and fluvial influences. </span> <p> <span style="font-family:arial, helvetica, sans-serif;font-size:small;">Compared to the insect assemblages previously discovered in the Late Albian/Early Cenomanian ambers from the same re− gion (Charente−Maritime, SW France) (Néraudeau et al. 2002, 2003; Perrichot 2005), the outcrop of Puy−Puy appears original and exciting because it is the first that contains clay with insect imprints. Moreover, contrasting with the about 1000 specimens of arthropods found regionally in amber, it is the first time that an Odonata is recorded in the mid Cretaceous deposits from Charentes. It can be assumed that further analyses of the fossili− ferous clay of Puy−Puy will enrich the knowledge of the Albian– Cenomanian insects from France.</span> </p>
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