| 词条 | Preprismatoolithus |
| 释义 |
|taxon = Preprismatoolithus |authority = Zelenitsky & Hills, 1996 }} Preprismatoolithus is a Late Jurassic oogenus. The species P. coloradensis is described by John Foster as being "of the prismatic basic type,"[1] with subspherical eggs about 10 cm (4 inches) in diameter.[1] 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,[2] but now is known to be theropod after the finding in Portugal,[3] associated with the embryos. Eggshell present in great abundance at the so-called "Young Egg Locality" which seems to have been a dinosaur nesting ground.[2] Congeneric eggshell fossils are found at additional Colorado sites including the Fruita Paleontological Area, the Uravan Locality and Garden Park.[2] See also
Footnotes1. ^"Eggs," Foster (2007) page 125. 2. ^1 2 3 "Another Generation: The Eggs," Foster (2007) page 239. 3. ^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. References
2 : Dinosaur trace fossils|Fossil parataxa described in 1996 |
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