Toller Porcorum [Phosphatic Conglomerate] (Cretaceous of the United Kingdom)

Where: England, United Kingdom (50.8° N, 2.6° W: paleocoordinates 39.5° N, 0.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mantelliceras mantelli ammonoid zone, Eggardon Grit Member (Upper Greensand Formation), Early/Lower Cenomanian (99.6 - 93.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Lower Chalk, which overlies the Eggardon Grit (Early Cenomanian). AGE: Early Cenomanian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From 25 cm thick phosphatic conglomerate at the base of the Lower Chalk.

• bed-level stratigraphic resolution

Environment/lithology: lithified, concretionary, glauconitic, phosphatic, sandy, calcareous conglomerate

• COMMENTS: Shallow marine carbonate setting.
• SPECIFIC LITHOLOGY: Phosphatic conglomerate, consisting of pebbles and cobbles of calcareous grit, often glauconitised, sometimes rotten and decalcified. LITHIFICATION: Lithified, based on facies description.

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: bulk,

• COLLECTOR: Not stated, but probably W. J. Kennedy. REPOSITORY: Unknown, probably the BMNH.

Primary reference: W. J. Kennedy. 1970. A correlation of the uppermost Albian and the Cenomanian of South-West England. Proceedings of the Geologist's Association 81(4):613-677 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 82912: authorized by Austin Hendy, entered by Austin Hendy on 05.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to characteristic ammonoidea, bivalvia, gastropoda, and other macrofossils. NOMENCLATURE: Not an authoritative publication and with somewhat antiquated nomenclature. Ammonoidea generally identified to species resolution while bivalves, gastropods and other macrofossils may not.
Cephalopoda
 Ammonitida - Acanthoceratidae
Mantelliceras sp. Hyatt 1903 ammonite
Mantelliceras cf. tenue Spath 1926 ammonite
Mantelliceras mantelli Sowerby 1814 ammonite
Mantelliceras saxbii Sharpe 1857 ammonite
 Ammonitida - Forbesiceratidae
Forbesiceras sp. Kossmat 1897 ammonite
 Ammonitida - Schloenbachiidae
Schloenbachia varians Sowerby 1817 ammonite
"Schloenbachia subtuberculata" = Schloenbachia varians subtuberculata Gerhardt 1897 ammonite
 Ammonitida - Hoplitidae
"Hyphoplites arausionensis" = Hyphoplites curvatus arausionensis
"Hyphoplites arausionensis" = Hyphoplites curvatus arausionensis Hébert and Munier-Chalmas 1875 ammonite
 Ammonitida - Turrilitidae
Mariella essenensis Geinitz 1849 ammonite
Hypoturrilites gravesianus d'Orbigny 1842 ammonite