sedimentary
Dinosaur Fossil (Skull)
Dinosauria fossilis (Petrified Hydroxyapatite / Calcium Carbonate)
AI-generated identification · may be incorrectHardness: 3-5 (Mohs), Color: Cream to light brown with tan highlights, Luster: Dull to waxy, Crystal Structure: Amorphous/Microcrystalline, Cleavage: None (conchoidal fracture), Specific Gravity: 2.3–2.9
Identified More sedimentary →
Explore Dinosaur Fossil (Skull) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 3-5 (Mohs), Color: Cream to light brown with tan highlights, Luster: Dull to waxy, Crystal Structure: Amorphous/Microcrystalline, Cleavage: None (conchoidal fracture), Specific Gravity: 2.3–2.9
Formation & geological history
Formed via permineralization or replacement where organic bone matter is replaced by minerals (often quartz or calcite) in sedimentary basins, typically during the Mesozoic Era (66-252 million years ago).
Uses & applications
Scientific research, paleontological study, museum display, and high-end private collection.
Geological facts
Fossils are not actual bone but rocks in the shape of bone. This specimen appears to show a theropod-like skull structure with large fenestrae (openings) to reduce weight without sacrificing strength.
Field identification & locations
Identify by looking for porous 'honeycomb' internal structures (trabecular bone) and specific anatomical features like teeth sockets or fenestrae. Usually found in badlands or areas with exposed sedimentary strata.
More like this
Other sedimentary specimens
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary