Nodule Collection

Seliguea feei fern. Selliguea del Fee, Selliguea fei. Handcoloured copperplate stipple engraving from Antoine Laurent de Jussieus Dizionario delle Scienze Naturali, Dictionary of Natural Science

Precious opal in ironside nodule
Opals are not truely crystalline and are therefore mineraloids. They comprise of (hydrated silica glass). Specimen found in Queensland, Australia. On display at the Natural History Museum, London

Marcasite comprises of (iron sulphide). It is similar in appearance to pyrite, but has a different structural composition

Wardite is comprised of hydrated sodium aluminum phosphate hydroxide. This bright green specimen has been deposited in variscite nodules

Ankylosaur skin nodule
This nodule would have been attached to the dinosaurs back by its flat base with the broad ridge providing protection. The Ankylosaurs were a family of dinosaurs characterised by thick bony plated

Shale
A specimen of shale containing small nodules of clay ironstone from the Lower Coal Measures, Brynamman, Carmarthenshire

Concretions

Fossilised millipede (Class Diplopoda)
This fossil is preserved in a siltstone nodule of Carboniferous age from the Yorkshire Coalfield. Length 63mm (unstraightened), length of nodule 76mm

Septarian nodule

Polacanthus skin nodule
These nodules were mixed in with the overlapping plates on Polacanthus skin similar to those in modern reptiles. Polacanthus lived 132 to 100 million years ago during the lower Cretaceous period

Paraisobuthus prantli, scorpion
A Scorpion fossil seen here in a nodule of rock

Opal
Boulder or nodular opal in a sandstone matrix from Queensland, Australia. Opals are not truely crystalline and are therefore mineraloids. They comprise of (hydrated silica glass)

Potentilla nivea L. snow cinquefoil
Sketch 2, Newfoundland Volumes. From a collection of original drawings and sketches by Georg Dionysius Ehret (1708-1770). Held in the Botany Library at the Natural History Museum, London

Flint nodule
This flint nodule originates from the Cretaceous rocks of the North Downs, England

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