Ammonite showcase2025sale30 “Palaeoenvironmental reconstruction of dinosaur nesting

“Palaeoenvironmental reconstruction of dinosaur nesting sites based on a geochemical approach to eggshells and associated palaeosols (Maastrichtian

Comparative geochemical studies suggest that the waters of Fossil Lake lacked the oxygen needed to sustain scavengers

traveling approximately 126 million miles

Luis Alvarez and Dr

Above: Moon Tree specimen at home with a Lego Lunar Lander

Ammonite showcase2025sale30 “Palaeoenvironmental reconstruction of dinosaur nestingAbove: Front of Specimen Card Ammonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. They survived several mass extinction events, including the PermianTriassic "Great Dying" which wiped out 96% of all marine species. They finally succumbed during the Cretaceous Paleogene extinction event 66 million years ago, which also wiped out the dinosaurs. This specimen is a fossilized ammonite shell from Madagascar.