Avian and non-avian dinosaur eggshell contains clues that are helpful in the reconstruction of ancient habitats and behaviors. Fossilized eggshell often shows signs of corrosion attributed to acid dissolution of the calcium carbonate, but this process has never been quantified in controlled experiments. In work reported here, extant avian dinosaur egg-shell fragments were placed in buffered solutions of varying pH and temperature for varying periods of time. Changes in the appearance, mass, surface area, and thickness were described and compared with naturally weathered eggshell. Treatment resulted in corrosion and pitting of the outer surface and corrosion of the mammillary structure of the inner surface. Fragment mass, surface area, and t...
Experiments to identify taphonomic variables influencing the fossilization of eggs and eggshells in ...
Dinosaur eggshell and evidence for wildfires are common in the fossil record. The effects of fire on...
The documentation of proteinaceous soft tissues in fossils from deep time remains controversial. Oft...
Dinosaurs, like modern birds, produced enormous quantities of eggshell as part of the reproductive p...
Eggshell taphonomy often is acknowledged to be worthy of investigation, but few studies have examine...
Dinosaurs, like modern birds, produced enormous quantities of eggshell as part of the reproductive p...
The cuticle layer consisting mainly of lipids and hydroxyapatite (HAp) atop the mineralized avian eg...
Eggshell taphonomy often is acknowledged to be worthy of investigation, but few studies have examine...
The recent discovery of pterosaur eggs containing embryos has provided important evidence regarding ...
Our understanding of the evolutionary transitions leading to the modern endothermic state of birds a...
Both the timing and nature of early Metazoan evolution remain controversial, with complementary, and...
Eggshell fragments from four extant birds and two Cretaceous dinosaurs were studied for their chemic...
Calcified eggshell protect developing embryos against environmental stress and contributes toreprodu...
Amniotic eggs are multifunctional structures that enabled early tetrapods to colonize the land milli...
Amniotic eggs are multifunctional structures that enabled early tetrapods to colonize the land milli...
Experiments to identify taphonomic variables influencing the fossilization of eggs and eggshells in ...
Dinosaur eggshell and evidence for wildfires are common in the fossil record. The effects of fire on...
The documentation of proteinaceous soft tissues in fossils from deep time remains controversial. Oft...
Dinosaurs, like modern birds, produced enormous quantities of eggshell as part of the reproductive p...
Eggshell taphonomy often is acknowledged to be worthy of investigation, but few studies have examine...
Dinosaurs, like modern birds, produced enormous quantities of eggshell as part of the reproductive p...
The cuticle layer consisting mainly of lipids and hydroxyapatite (HAp) atop the mineralized avian eg...
Eggshell taphonomy often is acknowledged to be worthy of investigation, but few studies have examine...
The recent discovery of pterosaur eggs containing embryos has provided important evidence regarding ...
Our understanding of the evolutionary transitions leading to the modern endothermic state of birds a...
Both the timing and nature of early Metazoan evolution remain controversial, with complementary, and...
Eggshell fragments from four extant birds and two Cretaceous dinosaurs were studied for their chemic...
Calcified eggshell protect developing embryos against environmental stress and contributes toreprodu...
Amniotic eggs are multifunctional structures that enabled early tetrapods to colonize the land milli...
Amniotic eggs are multifunctional structures that enabled early tetrapods to colonize the land milli...
Experiments to identify taphonomic variables influencing the fossilization of eggs and eggshells in ...
Dinosaur eggshell and evidence for wildfires are common in the fossil record. The effects of fire on...
The documentation of proteinaceous soft tissues in fossils from deep time remains controversial. Oft...