Stalicoolithidae
{{Short description|Oofamily of fossil eggs}}
{{Oobox
| fossil_range = {{fossil range|99.6|65|Late Cretaceous}}
| taxon = Stalicoolithidae
| authority = Wang, Wang, Zhao & Jiang, 2012
| subdivision_ranks = Oogenera
| subdivision =
}}
Stalicoolithidae is an oofamily of fossil eggs.Wang Q, Wang X L, Zhao Z K, and Jiang Y G. (2012). "[https://link.springer.com/article/10.1007/s11434-012-5353-2 A new oofamily of dinosaur egg from the Upper Cretaceous of Tiantai Basin, Zhejiang Province, and its mechanism of eggshell formation]" Chinese Science Bulletin. 57: 3740-3747. doi: 10.1007/s11434-012-5353-2
History
Stalicoolithid eggs were first discovered in 1971, but they were described initially as Dendroolithids,Zhang, S., X. Jin, J.K. O'Conner, M. Wang, and J. Xie. (2015). "A new egg with avian egg shape from the Upper Cretaceous of Zhejiang Province, China." Historical Biology 27(5):595-602. or as Spheroolithids, in the case of "Paraspheroolithus" shizuiwanensis and Shixingoolithus.
Description
Stalicoolithids are distinguished from other oofamilies by several characteristics. Most significantly, they have secondary eggshell units in the outer zone, and three distinct subzones of the columnar layer. They have a unique mix of developmental characteristics, giving insight into the evolution of the amniotic eggshell.
Parataxonomy
Stalicoolithidae contains at least three oogenera: Coralloidoolithus, Stalicoolithus, and Shixingoolithus. Shixingoolithus contains two oospecies: S. erbeni and S. qianshanensis.Moreno-Azanza, M., J.I. Canudo, and J.M. Gasca. (2014). "Spheroolithid eggshells in the Lower Cretaceous of Europe. Implications for eggshell evolution in ornithischian dinosaurs." Cretaceous Research 51:75-87.{{Cite journal |last1=He |first1=Qing |last2=Chen |first2=Zhong-Liang |last3=Zhang |first3=Shu-Kang |last4=Gui |first4=Ze-Wen |last5=Chen |first5=Ya-Ting |date=2022-08-25 |title=A new oospecies of Shixingoolithus (Shixingoolithus qianshanensis oosp. nov.) from the Qianshan Basin, Anhui Province, East China |journal=Journal of Palaeogeography |volume=11 |issue=4 |pages=629–639 |language=en |doi=10.1016/j.jop.2022.08.001 |issn=2095-3836|doi-access=free }} Also, the enigmatic Parvoblongoolithus could potentially be a stalicoolithid.
References
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Category:Fossil parataxa described in 2012
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