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Fossilized sauropod eggs displayed at Indroda Dinosaur and Fossil Park. Dinosaur eggs are the organic vessels in which a dinosaur embryo develops. When the first scientifically documented remains of non-avian dinosaurs were being described in England during the 1820s, it was presumed that dinosaurs had laid eggs because they were reptiles. [1]
Many ancient reptile groups are known from egg fossils including crocodilians, dinosaurs, and turtles. [3] Some ancient reptiles, like ichthyosaurs [8] and plesiosaurs [9] are known to have given live birth and are therefore not anticipated to have left behind egg fossils. Dinosaur eggs are among the most well known kind of fossil reptile eggs. [3]
On July 13, 1923, the party was the first in the world to discover dinosaur eggs. Initially thought to be eggs of a ceratopsian, Protoceratops, they were determined in 1995 actually to belong to the theropod Oviraptor. [5] During that same expedition, Walter W. Granger discovered a skull from the Cretaceous period. In 1925, the museum sent a ...
Six small non-avian dinosaur eggs, no bigger than grapes, were discovered during a field study in Ganzhou, China, in 2021. These eggs now mark the smallest-ever found in the world.
Model of a dinosaur egg. Dinosaur reproduction shows correlation with archosaur physiology, with newborns hatching from eggs that were laid in nests. [1] [2] Dinosaurs did not nurture their offspring as mammals typically do, and because dinosaurs did not nurse, it is likely that most dinosaurs were capable of surviving on their own after hatching. [3]
Fossilized Dinosaur eggs displayed at Indroda Dinosaur and Fossil Park. This timeline of egg fossils research is a chronologically ordered list of important discoveries, controversies of interpretation, taxonomic revisions, and cultural portrayals of egg fossils. Humans have encountered egg fossils for thousands of years. In Stone Age Mongolia, local peoples fashioned fossil dinosaur eggshell ...
In their phylogenetic analyses, Wu et al. (2024) found Gannanoolithus to occupy an uncertain position in relation to other dinosaur ootaxa. They recovered it in a polytomy of other theropod eggs which is the sister taxon to oviraptorosaur eggs, most of which belong to the Elongatoolithidae. Their results are displayed in the cladogram below: [1]
Macroelongatoolithus is an oogenus of large theropod dinosaur eggs, representing the eggs of giant caenagnathid oviraptorosaurs. They are known from Asia and from North America. Historically, several oospecies have been assigned to Macroelongatoolithus, however they are all now considered to be a single oospecies: M. carlylensis.
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