. The Quarterly journal of the Geological Society of London. oral zone. Of the twenty-one species of Mollusca the following twelve speciesare common to this bed and to the clay of Rupelmonde, Boom, & LYELL BELGIAN TERTIARY FORMATIONS. 305 near Antwerp, already described, which (allowing; for the small num-ber of species in each) affords decisive palseontological evidence oftheir contemporaneous origin :— Axinus crenata. flexuosa. Murex Deshayesii. Typhis argutum.
. The Quarterly journal of the Geological Society of London. oral zone. Of the twenty-one species of Mollusca the following twelve speciesare common to this bed and to the clay of Rupelmonde, Boom, & LYELL BELGIAN TERTIARY FORMATIONS. 305 near Antwerp, already described, which (allowing; for the small num-ber of species in each) affords decisive palseontological evidence oftheir contemporaneous origin :— Axinus crenata. flexuosa. Murex Deshayesii. Typhis argutum. (Chsenopus) semiplicata. Of the eleven species of Entomostraca above referred to, severalare common to Rupelmonde, Boom, &c. Next in the descending series we enter on the Middle Limburgbeds, or the Bergh sands, «, Table VIII. By reference to the accom-panying section, fig. 2, it will be seen that the first fossiliferous bed, by Fig. 2.—Section of the Bergh Sands {a, Table VIII.) at Berghj nearKleyn ft. in. a. Nucula-loam 2 0 «. White sand without shells 2 0 b. Pectunculus-bed 1 6 e. White sands without shells 4 0 d. Shelly sand with Cerithia 0 6 e. Sand without shells 1 6 /. Shelly with Cerithia 1 0 g. White sand with few shells {Cyprina Nystii). Not exposed. of this division is called the Pectunculus-bed, from the extraordi-nary abundance in it oi Pectunculus fossilis, Kon. (P. terehratularisyLamk.). The following are the shells which have been met with :— Fossils of the Pectunculus-bed Corbula Henckeliusiana (2). trigonella. Lucina islandica ? Nystii. Venus laevigata (1). incrassata. Cardita fossilis (6). pulvinatus (2). Limopsis Goldfussii (1). at Berghy near Kleyn Spawen. Pecten Hoeninghausii (2). Deshayesii. Dentalium acutum (1).Infundibulum Rathieri. contortidens. cuspidata. 306
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1845
