Skip to main content
Fig. 13 | Journal of Palaeogeography

Fig. 13

From: Labechia carbonaria Smith 1932 in the Early Carboniferous of England; affinity, palaeogeographic position and implications for the geological history of stromatoporoid-type sponges

Fig. 13

Examples of Lower Carboniferous rugose corals from England, showing rugose coral septa, to emphasise the difference between these and the structure of Labechia carbonaria. a & b Cyathophyllum NHMUK PI R16758, Bed of Hart, Northumberland. a External surface showing septa in vertical cross section; b Transverse section (TS) showing radially arranged septa. Note that Cyathophyllum is generally considered a Devonian taxon, so use of that name may be incorrect here, but this is a Carboniferous specimen; c & d Unidentified and uncatalogued rugosan. c TS showing radial septa. d Vertical section (VS) in the upper part, where vertical sections of septa partly intersect the plane of section (labelled); in the lower part, oblique to transverse sections are revealed due to curvature of the coral; e Top view of a rugose calyx showing radial arrangement of septa. Auloclisia, NHMUK PI R25872, Lower D1 Biozone (Asbian, just above the level of the Seventh Limestone), Isle of Man. Photos taken by the authors

Back to article page