II'm not doing that professionally, so each item is either prepped or not, and I usually don't have more items of a species than pictured.
Datierung und Bestimmung erfolgte mit größtmöglicher Sorgfalt, Irrtümer natürlich vorbehalten.
Petrified trunk
Dadoxylon keuperianum
Middle Keuper (Stubensandstein), Wüstenrot
Approx. 20x6x5 cm, glued several times
Petrified trunk
Dadoxylon keuperianum
Middle Keuper (Stubensandstein), Wüstenrot
Approx. 38x7x5 cm, glued several times
Stromatolithe
Lower Cretaceous (Estratos Quebrada La Tortora), Andes Mts. near La Serena/Coquimbo, Chile
Approx. 8.5x5x2.5 cm, back side left naturally
Stromatolithe
Lower Cretaceous (Estratos Quebrada La Tortora), Andes Mts. near La Serena/Coquimbo, Chile
Approx. 8.5x4.5x2.5 cm, back side left naturally
Halite pseudomorphs
Middle Keuper (Lower Bunte Estherienschichten), Speinshart near Grafenwöhr
Approx. 10x5x0.5 cm
Halite pseudomorphs
Middle Keuper (Lower Bunte Estherienschichten), Speinshart near Grafenwöhr
Approx. 5.5x4x0.8 cm