Taphonomy  

Preservation

The Ludford Lane arthropods are preserved as fragile fragments of carbonized cuticle. They are also compressed severly obscuring detail though features of relief can be discerned under low-angle lighting. The cuticle of the terrestrial arthropods is typically darker than that of aquatic arthropods and the quality of preservation varies between taxa, possibly reflecting structural and compositional variation of different types of cuticle (Jeram et al., 1990).

The composition of the sediment in which the material is preserved has also influenced the high quality of preservation. The larger size of the silt grains are thought to have prevented flattening of the specimens unlike material from Gilboa. Indentations produced by compression against silt grains are often apparent further obscuring original detail.

Further work awaits to be done on the geochemistry influencing the taphonomy of the Ludford Lane Bonebed, though Dunlop(1996) notes that most of the biogenic material in the lagerstatte horizon is either phosphatic or carbonaceous allowing maceration and extraction of elements with hydrofluoric acid amenable.

Transport

The fragmentary nature of the cuticle testifies to the high energy conditions of deposition of the Ludford Lane Bonebed material. The environment of deposition is interpreted as being near shore and tidally-influenced, where terrestrial material was transported, possibly from the Tilestones delta that would have lain to the southwest of the Ludlow deposits (Antia, 1979; Jeram et al., 1990). Quartz grains wthin the silty matrix exhibit concave conchoidal fractures and a relatively high degree of rounding further indicating a high energy environment and long transport distance.


 Ludford Lane Bonebed Index page

 Location

 Geological setting and age.

Fauna and Flora

 References and links