Craie d'Obourg, Mons Basin (Cretaceous of Belgium)

Where: Belgium (50.5° N, 4.0° E: paleocoordinates 41.2° N, 5.5° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Craie d'Obourg Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Craie d'Obourg, which unconformably overlies the Craie de Triviéres (Early Campanian), and is gradationally overlain by the Craie de Nouvelles (Late Campanian). AGE: early Late Campanian, on the basis of ammonite and belemnite biostratigraphy. STRATIGRAPHIC POSITION: Collection is a composite of the entire formation.

• formation-level stratigraphic resolution

Environment/lithology: lithified, hardground, white, calcareous lime mudstone

• ENVIRONMENT: Shallow marine carbonate setting.
• SPECIFIC LITHOLOGY: Pure, massive, fine-grained, white chalk without flint layers. A prominent hardground is present at its base. LITHIFICATION: Lithified on the basis of facies description.

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: surface (in situ),

• COLLECTORS: Multpple collectors, but probably including W.J. Kennedy. REPOSITORY: Institut Royal de Science Naturelles de Belgique (IRSNB), Naturhistorisch Museum.

Primary reference: W. J. Kennedy. 1993. Campanian and Maastrichtian ammonites from the Mons Basin and adajcent areas (Belgium). Bulletin de L'Institute Royal des Sciences Naturelles de Belgique 63:99-131 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82895: authorized by Austin Hendy, entered by Austin Hendy on 03.08.2008, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to representative, common, and biostratigraphically important ammonoids and belemnites. NOMENCLATURE: An authoritative publication, with modern nomenclature and species-resolution identifications.
Chondrichthyes
 Rajiformes - Rhinobatidae
Rhinobatos casieri Herman 1977 guitarfish
Cephalopoda
 Ammonitida - Diplomoceratidae
Glyptoxoceras retrorsum Schlüter 1872 ammonite
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite
Baculites aquilaensis Reeside 1927 ammonite
 Ammonitida - Scaphitidae
Scaphites (Scaphites) gibbus Schlüter 1872 ammonite
 Ammonitida - Pachydiscidae
"Parapuzosia (Parapuzosia) stobaei" = Patagiosites stobaei, "Pachydiscus (Pachydiscus) cf. subrobustus" = Pachydiscus subrobustus, Pachydiscus (Pachydiscus) cf. oldhami
"Parapuzosia (Parapuzosia) stobaei" = Patagiosites stobaei Nilsson 1827 ammonite
"Pachydiscus (Pachydiscus) cf. subrobustus" = Pachydiscus subrobustus Seunes 1892 ammonite
 Ammonoidea -