Preprismatoolithusis aLate Jurassicoogenus.The speciesP. coloradensisis described by John Foster as being "of the prismatic basic type,"[1]with subspherical eggs about 10 cm (4 inches) in diameter.[2]This oospecies has been initially attributed to "hypsilophodontid"dinosaurs, although a lack of associated embryo material currently makes confirming the egg-layer's identity impossible,[1]but now is known to be theropod after the finding in Portugal,[3]associated with the embryos.
| Preprismatoolithus Temporal range:
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|---|---|
Egg fossil classification
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| Basic shell type: | †Dinosauroid-prismatic |
| Oofamily: | †Prismatoolithidae |
| Oogenus: | †Preprismatoolithus Zelenitsky & Hills, 1996 |
Eggshell present in great abundance at the so-called "Young Egg Locality" which seems to have been a dinosaur nesting ground.[1]Congeneric eggshell fossils are found at additional Colorado sites including the Fruita Paleontological Area, the Uravan Locality and Garden Park.[1]
See also
editFootnotes
editReferences
edit- Foster, J. (2007).Jurassic West: The Dinosaurs of the Morrison Formation and Their World.Indiana University Press. 389pp.ISBN978-0-253-34870-8.
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