Fossilized remains of eggs laid by ancient animals
Fossilized dinosaur eggs displayed at Indroda Dinosaur and Fossil Park
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.
Eggfossils are the fossilized remains of eggs laid by ancient animals. As evidence of the physiological processes of an animal, eggfossils are considered...
Fish eggfossils are the fossilized remains of fish eggs. Fossil fish eggs have an extensive record going at least as far back as the Devonian and spanning...
Reptile eggfossils are the fossilized remains of eggs laid by reptiles. The fossil record of reptile eggs goes back at least as far as the Early Permian...
eggfossils are the fossilized remains of eggs laid by cephalopods. The fossil record of cephalopod eggs is scant since their soft, gelatinous eggs decompose...
presumed that dinosaurs had laid eggs because they were reptiles. In 1859, the first scientifically documented dinosaur eggfossils were discovered in France...
order Monotremata. They are the only known group of living mammals that lay eggs, rather than bearing live young. The extant monotreme species are the platypus...
from eggshell fossils found in Laetoli, Tanzania. It was related to the modern day Struthio. Harrison, T.; Msuya, C. P. (2005). "Fossil struthionid eggshells...
dinosaur eggfossil. Ghughua Fossil Park is located near National Highway 11. It is situated 14 km from Shahpura and 76 km from Jabalpur. Shivalik Fossil Park...
portrayals of eggfossils. Humans have encountered eggfossils for thousands of years. In Stone Age Mongolia, local peoples fashioned fossil dinosaur eggshell...
eight eggs. Specimens CUGW EH067-1 (a single egg) and EH067-2 (a pair of eggs) were also referred to the oogenus. All of the known fossileggs have been...
conditions afflicting eggs have been documented in the fossil record. Examples include eggshell of abnormal thickness and fossileggs with multiple layers...
in a fish Eggs of various parasites (mainly nematodes) from wild primates List of egg topics Animal shell Butterfly eggsEgg white Fossilegg Haugh unit...
is an oogenus of fossilegg laid by a paleognath. Medioolithus is known several eggshell fragments, and one complete, spherical egg. M. geiseltalensis...
dinosaur eggs, and are often mistaken for fossils as well. Gathering fossils dates at least to the beginning of recorded history. The fossils themselves...
Antarcticoolithus is an oogenus of large fossileggs from the Maastrichtian part of the Lopez de Bertodano Formation of Seymour Island, Antarctica. The...
Incognitoolithus is an oogenus of medioolithid fossil bird egg. It is notable for bearing evidence of predation, possibly from a bird pecking the eggshell...
Tristraguloolithus is an oogenus of dinosaur egg from the late Campanian of Alberta. Dinosaurs portal Paleontology portal List of dinosaur oogenera D...
Palaeoxyris is a morphogenus of eggs cases, widely thought to have been produced by hybodonts, with a predominant occurrence in ancient freshwater environments...
University Press, Bloomington, Indiana K. E. Mikhailov. 1996. New genera of fossileggs from the Upper Cretaceous of Mongolia. Paleontological Journal 30(2):246-248...
"Molecular cloning and sequencing of the 18S rDNA from specialized dinosaur eggfossil found in Xixia Henan, China". Acta Sci Nat Univ Pekinensis. 31: 140–47...
hatchlings can easily break through the shells. Some fossils of Bauroolithus in Brazil are most likely from eggs that already hatched, but none show any signs...
usually pose no harm. The eggs can also be called fart eggs, cock eggs, fairy eggs, dwarf eggs, and witch eggs. The name wind eggs is also sometimes used...
oogenus of fossil Megaloolithid egg from Morocco. It is known from eggshell fragments which are distinguished from other Megaloolithid eggs because of...
Megaloolithus is an oogenus of dinosaur egg. They are thought to have been laid by sauropod dinosaurs. They are known for having thick eggshells, at least...
stones. Egg predation may be an ancient feeding strategy. A fossil of the Late Cretaceous snake Sanajeh of western India, found coiled around an egg and a...
E. Mikhailov, Emily S. Bray & Karl E. Hirsch (1996). "Parataxonomy of fossilegg remains (Veterovata): basic principles and applications". Journal of Vertebrate...
Prismatoolithus is an oogenus of dinosaur egg from the Cretaceous (Hauterivian-Maastrichtian) and possibly also the earliest Paleocene. They likely belonged...
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