Reptile tracks are quite an unusual preparation work. Especially when even skin imprints are preserved, being covered by an thin layer of limestone or marl. Because the matrix was susceptible to water and direct mechanical strain (for example through brushing) would lead to damaging the surface, special  caution was needed while working.  

That is why the matrix cover was removed millimeter by millimeter with an airscribe under the binocular, without touching the layer containing the tracks. Step by step all covering matrix pieces could be removed and the tracks were completely exposed. 

Fossil: Rhynchosauroides peabodyi

Locality: Winterswijk-Ratum (Neatherlands)

Formation: Triassic

Length of the plate: 15 cm

Collection: Rainer Albert

Work required: 4 hours