Unusual theropod eggshells from the early cretaceous blesa formation of the Iberian Range, Spain

Moreno-Azanza, M. ; Canudo, J.I. (Universidad de Zaragoza) ; Gasca, J.M.

Resumen: 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.

Idioma: Inglés

DOI: 10.4202/app.2012.0069

Año: 2015

Publicado en: ACTA PALAEONTOLOGICA POLONICA 59, 4 (2015), 843-854
ISSN: 0567-7920

Factor impacto JCR: 1.503 (2015)

Categ. JCR: PALEONTOLOGY rank: 25 / 54 = 0.463 (2015) - Q2 - T2

Factor impacto SCIMAGO: 0.998 - Paleontology (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/B064-08B
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2008-005538

Tipo y forma: Article (Published version)

Área (Departamento): Área Paleontología (Dpto. Ciencias de la Tierra)