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Discover the geological wonders of Yorkshire coast fossils, from Mesozoic formations to the Jurassic-Cretaceous boundary. Explore the significance of fossils and palaeontology in understanding Earth's history. Learn about key fossil sites and iconic marine creatures.
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Fossils of the Yorkshire Coast Dr Liam Herringshaw - lgh865@hotmail.com
The F Word What are fossils? What is palaeontology? Why are fossils important?
What are fossils? • Petrified remains of old, dead organisms • (Also trace fossils) • Most things don’t get fossilized • Best to live in the sea • Best to have a hard shell
Fossils & Strata Smith, Phillips & Yorkshire
Yorkshire CoastFossils What, Where & Why?
Geology of the Yorkshire Coast Mesozoic – middle life
The Early Jurassic:Redcar – Ravenscar Redcar Mudstone Formation Staithes Sandstone Formation Cleveland Ironstone Formation Whitby Mudstone Formation
Redcar Mudstone Formation Robin Hood's Bay Redcar Earliest Jurassic unit on Yorkshire Coast • - Divided into 4 members
Common fossils Gryphaeaarcuata, an Early Jurassic 'oyster'
Trace fossils Rhizocorallium, Boggle Hole
Staithes Sandstones & Ironstones
Staithes Sandstone Fm Sandstones with cross-stratification Burrowed siltstones
Cleveland Ironstone Formation Transition from SSF to CIF, Penny Nab
Fossils Belemnites, bivalves, woody debris
Ironstone burrows Rhizocorallium, Old Nab
Jet-powered Whitby Early Jurassic Whitby Mudstone Formation Grey Shales Black Shales Alum Shales
Whitby–Saltwick Nab Bituminous → Alum Shales
Fossil fuel! The Jet Rock – very high organic content
Ammonites Hildoceras Dactylioceras Harpoceras
Bivalves Dacryomya ovum Alum shale 'nut shell' Pseudomytiloides dubius The dubious, false mussel-like clam!
Marine mudstone monsters! Temnodontosaurus crassimanus
World Famous Fossil Plants
Soils, coals, roots Yons Nab, Cayton Bay
Dinoturbation Cloughton Wyke
Shallow marine burrows Diplocraterion, Cloughton Wyke
There are Jurassic burrows in the walls of the museum! Traces of Yorkshire
Filey Brigg Birdsall Calcareous Grit: wedge of tough, limy sandstone
Filey Briggstratigraphy Coarse-grained Limestones-sandstones Oolites Shelly fossils Trace fossils
Speeton Clay fossils Ammonites, crustaceans, gastropods
Chalk Group Very fine-grained shelly limestones
Belemnites in red chalk Neohibolites
Flamborough Sponge Beds 10m-thick sponge-rich interval (near Sewerby)
Chalk fossils Inoceramid bivalves D, E, from Flamborough
Chalk fossils Echinoids (sea urchins) Dane's Dyke-Sewerby