Triceratops prorsus "Horacio" skull - Lot 1

Triceratops prorsus "Horacio" skull Taxon : - Triceratops prorsus Geological period: - Upper Cretaceous (Maastrichtian), around 66 million years ago Provenance: - Lance Formation, Wyoming, USA - Discovered in eastern Wyoming, about 50 km northeast of Lance Creek Fossil type: - Skull more than 70% complete, in anatomical position Dimensions: - Total skull length (snout to end of collar): 186 cm - Maximum width (collar): 83 cm - Total skull height: 118 cm Original elements present - Supraorbital horns: complete - Nasal horn: complete - Flange: over 70% preserved, without fenestration; left squamosal 100% complete - Jaws: left mandible 100% present, teeth visible, predental complete - Left jugal 100% complete - Maxilla and premaxilla 60% complete - Cranial cavity 60% preserved Mounting: - Skull mounted on discreet metal stand Authentication: - Scientific expertise: Jonica dos Remedios Esteves - Full documentation available on request Legal provenance : - Authorized collection, in compliance with US regulations - Export and ownership certificate included Scientific particularities: - Species identified by a more pronounced nasal horn, shorter horns above the eyes, higher, rounded snout - Young individual in full growth, full ruff without fontanelles - Enables us to better understand the evolution from T. horridus to T. prorsus Paleontological context : - Lance Formation: Maastrichtian continental deposit, rich in articulated fossils - Formerly swampy region, warm, humid climate, abundant fauna (Triceratops, Tyrannosaurus, Edmontosaurus, Ankylosaurus, turtles, crocodiles, birds, mammals) - Presence of layers rich in iridium and shocked quartz, evidence of the meteorite impact that caused the mass extinction.