- Tytuł:
- Unusual theropod eggshells from the Early Cretaceous Blesa Formation of the Iberian Range, Spain
- Autorzy:
-
Moreno-Azanza, M.
Canudo, J.I.
Gasca, J.M. - Powiązania:
- https://bibliotekanauki.pl/articles/22844.pdf
- Data publikacji:
- 2014
- Wydawca:
- Polska Akademia Nauk. Instytut Paleobiologii PAN
- Opis:
- Trigonoolithus amoae oogen. et oosp. nov. is described on the basis of abundant eggshell fragments from the La Cantalera 1 site in the Early Cretaceous (early Barremian) Blesa Formation, Teruel Province, northern Spain. The surface ornamentation, the most diagnostic feature of the new oogenus, consists of closely spaced sub-triangular or rounded protuberances that have not previously been reported in any other ootaxon. The eggshells present three distinct layers, with a gradual transition between prismatic and mammillary layers, and a poorly developed external layer with progressive prismatic to external layer transition, a combination of characters that allows them to be assigned to Prismatoolithidae. Phylogenetic analyses based on oological characters place Trigonoolithus at the base of Prismatoolithidae.
- Źródło:
-
Acta Palaeontologica Polonica; 2014, 59, 4
0567-7920 - Pojawia się w:
- Acta Palaeontologica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł