La Brea Bird Bones points Screw-on lid with flip top

Screw-on lid with flip top

Plesiosaurs were marine reptiles that appeared in the Triassic and died out along with the dinosaurs at the end of the Cretaceous period

The nodules can often be found along streams and beaches

The tissue forming the outermost layer of glyptosaurine osteoderms is similar to tooth enamel and is called osteodermine

growing up to 25 cm (10 in)

La Brea Bird Bones points Screw-on lid with flip topSandhill Crane Ulna and Neck Vertebra & Redhead Duck Humerus Late Pleistocene epoch Approx. 20,000 30,000 years old Rancho La Brea Formation Maricopa, California Specimen approx. size: 5. 25" x 2. 5" x 2. 25" Due to their fragile nature, bird bones are relatively less common in the fossil record than those of other taxa. However, thanks to the preservative properties of asphalt, Rancho La Brea has one of the worlds largest collections of fossil birds,