Walton-on-the-Naze, London Clay, Unit 1 (Eocene of the United Kingdom)

Also known as section TM 267243

Where: England, United Kingdom (51.8° N, 1.3° E: paleocoordinates 47.3° N, 1.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: London Clay Formation, Early/Lower Eocene (55.8 - 48.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; concretionary, pebbly, pyritic, silty, carbonaceous claystone and shelly/skeletal, gray, blue, carbonaceous claystone

• primarily clay and silty clay, some nodular and pebbly horizons, some pyritized material, lots of wood fragments. Unit 1 is a blue-grey clay with bone and wood pockets.

Size classes: macrofossils, mesofossils, microfossils

Preservation: recrystallized, original carbon, replaced with pyrite

Primary reference: W. George and S. Vincent. 1977. Report of field meeting Walton-on-the-Naze and Wrabness, Essex, 2.X, 1976 with notes on the London Clay of Walton. Tertiary Research 1(3):83-90 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38947: authorized by John Alroy, entered by Erin Leckey on 17.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

  - Astrorhizidae
Mollusca indet. Linnaeus 1758
shell pockets
 Teleostei -
Teleostei indet.
teleost accumulations, usually small fish
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle
 Squamata - Colubridae
"Elapidae indet." = Elapinae
"Elapidae indet." = Elapinae BoiƩ 1827 colubrid snake
Mammalia indet. Linnaeus 1758 mammal
mammalian vertebra
Ophiuroidea indet. Gray 1840 brittle star
Echinoidea indet. Leske 1778 sea urchin