Cretaceous Macroolithus Raptor Dinosaur Egg Pair

Macroolithus Raptor Dinosaur Egg Pair

Oofamily Elogatolithidae, Oogenus Macroolithus

Geological Time: Upper Cretaceous (Maastrichtian Stage)

Size (25.4 mm = 1 inch): Dinosaur eggs are 190 and 210 mm long, 70 and 85 mm across, 15 and 20 mm high on a 50 mm thick pedestal base

Fossil Site: Shaanxi Province, China

Code: RE02

Price: $1550.00

Raptor Dinosaur EggsDescription: This is a fine example of a clutch (subset of nest) of dinosaur eggs of the Oofamily Elongatolihidae. They are larger than the eggs of the Oogenus Elongatolithus, which typically are no longer than 180 mm. Because dinosaur eggs are most often found independent of the animal that laid them, they are typically given names associated with their eggshell structure. A few notable exceptions are the Hadrosaur Maiasaura and the enigmatic dinosaur Oviraptor.. The latter is a classic example of scientists jumping to conclusions. During the Central Asiatic Expeditions led by Roy Champan Andrews in the 1920's, the first dinosaur eggs were discovered. Due to the fact that the most prevalent dinosaur in the region was Protoceratops, the scientists thought the eggs were from this taxon. They found a small unusual dinosaur in association with a nest, and assumed that this dinosaur was overcome in the act of stealing the eggs. They gave this dinosaur the name Oviraptor philoceratops (Ceratops-loving egg thief). During the 1990's, several expeditions to Mongolia discovered more examples of this association, and the scientists came to the conclusion that the Oviraptor was BROODING the eggs - not a thief, but a devoted parent. It is this type of dinosaur, a member of the Oviraptoridae, that laid this egg. China has extensive Mesozoic continental deposits called "red beds" because of their color. It is in these beds that the eggs occur, from Shandong Province in the east to Xinyang Ugur in the west. The eggs are found with greatest frequency in Shandong, Henan, and Guangdong Provinces. The mineral component of eggshell is Calcite, which can be seen here in several areas of these well-preserved eggs. It is believed that these eggshells were laid down through sequential formation of the membrane and calcareous layers much as in birds.

This is a fine 3-D example of a pair of eggs that would have comprised a nest of some 20 or more eggs laid in a circular pattern, two or three eggs deep, perched upon a pedestal of the redbeds from which they were collected.

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