Embryo fossils are the preserved remains of unhatched or unborn organisms. Many fossils of the 580 million year old Doushantuo Formation have been interpreted...

embryo discovered in Ganzhou, southern China. It was discovered in rock layers of the Hekou Formation, which dates to the Late Cretaceous. The embryo...

Dinosaur eggs are the organic vessels in which a dinosaur embryo develops. When the first scientifically documented remains of non-avian dinosaurs were...

An embryo is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of...

Peng, F; et al. (2006). "Synchrotron X-ray tomographic microscopy of fossil embryos". Nature. 442 (7103): 680–683. Bibcode:2006Natur.442..680D. doi:10.1038/nature04890...

Hell Creek dinosaur groups fossils of hatchlings and intact eggs with embryo fossils fossil pterosaurs for which no other fossils exist at that time drowned...

This list of fossil sites is a worldwide list of localities known well for the presence of fossils. Some entries in this list are notable for a single...

PMID 18509443. S2CID 205213348. Salisbury, Steven (28 May 2008). "Oldest Embryo Fossil Found". Jeanna Bryner. Retrieved 15 October 2013. Pea-sized Seahorse...

edge have cytoplasm continuous with that of the egg, allowing the yolk and embryo to exchange waste and nutrients with the surrounding cytoplasm. Monotremes'...

of the Doushantuo fossils to modern decaying Thiomargarita and expired sea urchin embryos shows little similarity between the fossils and decaying bacterial...

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...

fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own,...

will impact an embryo is dependent on several factors, such as how long the embryo has been exposed, the stage of development the embryo was in when exposed...

In botany, a seed is a plant structure containing an embryo and stored nutrients in a protective coat called a testa. More generally, the term "seed" means...

the 19th century as model organisms in developmental biology, as their embryos were easy to observe. That has continued with studies of their genomes...

fossils are controversial; the fossil Vernanimalcula may be the earliest known bilaterian, but may also represent an infilled bubble. Fossil embryos are...

than to ray-finned fish. Well-represented in both freshwater and marine fossils since the Devonian, they are now represented by only two extant marine...

several eggs, some of which contain embryos. These may represent the oldest leathery eggs currently known. The Qianlong fossil material was discovered in sediments...

recapitulates phylogeny"—is a historical hypothesis that the development of the embryo of an animal, from fertilization to gestation or hatching (ontogeny), goes...

Ediacaran fossil embryos from the Portfjeld Formation in Greenland has significantly expanded the paleogeograpical occurrence of Doushantuo-type fossil "embryos"...

develops into an embryo. A seed develops which contains the embryo. The seed also contains the integument cells surrounding the embryo. This is an evolutionary...

and the extinct clade Cambroernida. In deuterostomes, the developing embryo's first opening (the blastopore) becomes the anus and cloaca, while the mouth...

preserved still within the mother's body, or associated with fossil embryos. Some fossil eggs possibly laid by fish cannot be confidently distinguished...

journal}}: CS1 maint: multiple names: authors list (link) "First tyrannosaur embryo fossils revealed". Science. October 19, 2020. Archived from the original on...

given genus name refers to the finding of Maiasaura peeblesorum eggs, embryos, and juveniles in a nest-like structure by Marion Brandvold in 1978 relatively...

cause apparently sudden changes in the fossil record, since embryos fossilise poorly. As the gaps in the fossil record had been used as an argument against...

végétaux fossiles ("History of fossil plants"), which has earned for him the title of "father of paleobotany." This classification arranged fossil plants...

diapause. The embryo does not immediately implant in the uterus, but remains dormant for some time. No development takes place as long as the embryo remains...

750 million years ago. Nonetheless, Caveasphaera fossils may look similar to starfish and coral embryos. Still, researchers have concluded, "Parental investment...

P Kolosov Valentine, JW; Jablonski, D; Erwin, DH (1999). "Fossils, molecules and embryos: new perspectives on the Cambrian explosion". Development. 126...