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Trigonoolithus
''Trigonoolithus'' is an oogenus of dinosaur egg, representing a basal prismatoolithid. Its eggshell, like avian eggs, is composed of three structural layers, but cladistic analysis suggests that its parent was a non-avian theropod. History Fossil eggshells now assigned to ''Trigonoolithus'' were first discovered in 2009 in paleontology, 2009 by Miguel Moreno-Azanza, José Manuel Gasca, and José Ignacio Canudo, three paleontologists from Universidad de Zaragoza.Moreno-Azanza, M., Gasca, J.M., and Canudo, J.I. (2009)A high-diversity egg shell locality from the Hauterivian–Barremian transition of the Iberia Peninsula.''Journal of Vertebrate Paleontology'' 29 (Supplement to No. 3): 151A. They recognized that the fossils represented a new oogenus of prismatoolithids, but the description would not be completed until 2014 in paleontology, 2014, when they published a description of the new oogenus and oospecies ''Trigonoolithus amoae'' in the paleontology journal ''Acta Palaeontologica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oogenus
Egg fossils are the fossilized remains of eggs laid by ancient animals. As evidence of the physiological processes of an animal, egg fossils are considered a type of trace fossil. Under rare circumstances a fossil egg may preserve the remains of the once- developing embryo inside, in which case it also contains body fossils. A wide variety of different animal groups laid eggs that are now preserved in the fossil record beginning in the Paleozoic. Examples include invertebrates like ammonoids as well as vertebrates like fishes, possible amphibians, and reptiles. The latter group includes the many dinosaur eggs that have been recovered from Mesozoic strata. Since the organism responsible for laying any given egg fossil is frequently unknown, scientists classify eggs using a parallel system of taxonomy separate from but modeled after the Linnaean system. This " parataxonomy" is called ''veterovata''. History The first named oospecies was '' Oolithes bathonicae'', a name gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
