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Eggshell present in great abundance at the so-called "Young Egg
Locality" which seems to have been a dinosaur nesting ground. Congeneric eggshell fossils are found at additional Colorado sites including the Fruita Paleontological Area, the Uravan Locality and Garden Park.
185:" dinosaurs, although a lack of associated embryo material currently makes confirming the egg-layer's identity impossible, but now is known to be theropod after the finding in Portugal, associated with the embryos.
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Ribeiro, V., Mateus O., Holwerda F., Araújo R., & Castanhinha R. (2013). Two new theropod egg sites from the Late
Jurassic Lourinhã Formation, Portugal. Historical Biology. (ahead-of-print), 1-12.
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is described by John Foster as being "of the prismatic basic type," with subspherical eggs about 10 cm (4 inches) in diameter. This oospecies has been initially attributed to "
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Jurassic West: The
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506:Fossil parataxa described in 1996
257:Indiana University Press. 389pp.
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232:"Eggs," Foster (2007) page 125.
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