IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Print this page
The late Late Albian (Mortoniceras fallax Zone) cephalopod fauna from the Bracquegnies formation at Strépy-Thieu (Hainaut, southern Belgium)
Kennedy, W.; Jagt, J.W.M.; Amédro, F.; Robaszynski, F. (2008). The late Late Albian (Mortoniceras fallax Zone) cephalopod fauna from the Bracquegnies formation at Strépy-Thieu (Hainaut, southern Belgium). Geol. Belg. 11(1-2): 35-69
In: Geologica Belgica. Geologica Belgica: Brussels . ISSN 1374-8505; e-ISSN 2034-1954, more
Peer reviewed article  
Available in  Authors 
Keywords
    Ammonoida † [WoRMS]; Nautiloidea [WoRMS]
    Marine/Coastal
Author keywords
    Ammonites, nautiloids, Cretaceous, Albian, taxonomy
Authors  Top 
  • Kennedy, W.
  • Jagt, J.W.M.
  • Amédro, F.
  • Robaszynski, F., more
Abstract
    Excavations in 1989-1990 for the construction of a boat lift near the villages of Strépy and Thieu, east of Mons (province of Hainaut, southern Belgium), exposed a 40-metre section of the Bracquegnies Formation (Haine Green Sandstone Group; the ‘Meule de Bracquegnies’ of previous authors). Several hundred well-preserved, silicified cephalopods were collected from between 15 and 35 metres above the base of the sequence temporarily exposed there. The fauna is: Eutrephoceras clementianum (d’Orbigny, 1840), Puzosia (Puzosia) mayoriana (d’Orbigny, 1841), Callihoplites tetragonus (Seeley, 1865), Discohoplites valbonnensis valbonnensis (Hébert & Munier-Chalmas, 1875), Cantabrigites cantabrigense Spath, 1933, Mortoniceras (Mortoniceras) fallax (Breistroffer, 1940), M. (M.) nanum Spath, 1933, Neophlycticeras (Neophlycticeras) blancheti (Pictet & Campiche, 1859), Stoliczkaia (Stoliczkaia) notha (Seeley, 1865), Anisoceras armatum (J. Sowerby, 1817), Hamites subvirgulatus Spath, 1941, Lechites (Lechites) gaudini (Pictet & Campiche, 1861) and Scaphites (Scaphites) sp. juv. This assemblage is the first extensive fauna from the Mortoniceras (Mortoniceras) fallax Zone of the upper Upper Albian to be described from an expanded section. The assemblage is dominated by specimens referred to a highly variable, dimorphic Callihoplites tetragonus (> 250 specimens studied), of which many of the forms of Callihoplites described by Spath (1928) from the remanié Late Albian fauna at the base of the Lower Cenomanian Cambridge Greensand in eastern England are shown to be no more than intraspecific variants.
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors