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The eggs of many different fish taxa have contributed to this record, including lobe-finned fish, placoderms, and sharks. Occasionally eggs are preserved still within the mother's body, or associated with fossil embryos. Some fossil eggs possibly laid by fish cannot be confidently distinguished from those laid by amphibians. [5]
Image credits: Sivitri617 Around 6.3 million companion animals enter U.S. animal shelters every year. Of those, approximately 3.1 million are dogs and 3.2 million are cats.
Antarcticoolithus is an oogenus of large fossil eggs from the Maastrichtian part of the Lopez de Bertodano Formation of Seymour Island, Antarctica. The genus contains the type species A. bradyi, described by Legendre et al. in 2020. [1] The fossil egg, the first found in Antarctica, was discovered in 2011 by a Chilean team of researchers.
Paraprefica major fossil. The potoos today are exclusively found in the Americas, but they apparently had a much more widespread distribution in the past. Fossil remains of potoos dating from the Eocene have been found in Germany. [4] A complete skeleton of the genus Paraprefica has been found in Messel, Germany. It had skull and leg features ...
Hypselosaurus priscus egg. Egg paleopathology is the study of evidence for illness, injury, and deformity in fossilized eggs. A variety of pathological conditions afflicting eggs have been documented in the fossil record. Examples include eggshell of abnormal thickness and fossil eggs with multiple layers of eggshell.
A pair of Macroolithus eggs. Macroolithus eggs are characterized by large size, measuring 16 to 21 cm (6.3 to 8.3 in) long, and by their particularly coarse ornamentation. [1] [2] Their microstructure is not well defined in the literature, [1] but generally follows the typical elongatoolithid pattern: [2] The eggshell is arranged into two structural layers (the mammillary layer and the ...
Phaceloolithus is nearly spherical, measuring 167–168 mm long and 140–150 mm across. The eggshell is very thin, measuring from 0.5 to 0.7 mm thick. [1] Like most other non-avian dinosaur eggs, [3] Phaceloolithus's shell is stratified into two layers: the prismatic layer on the outside, and the mammillary layer on the inside. [1]
This category is for all articles concerned with fossilized eggs or parts of eggs, including taxa defined on the basis of such fossils Wikimedia Commons has media related to Egg fossils . Subcategories