More information: Shukang Zhang, Biogenic origin of secondary eggshell units in dinosaur eggshells elucidates lost biomineralization process in maniraptoran dinosaurs, Science Advances (2025). DOI ...

Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic rocks) and is formed in four main ways: by the deposition of the weathered remains of other rocks (known ...

Biogenic construction: The new era of civil engineering. Higher Education Press . Journal Biogeotechnics DOI 10.1016/j.bgtech.2024.100130 ...

The calcitic layers of the eggshells of archosaurs (including crocodilians and birds) and turtles are composed of distinctive crystalline structures known as eggshell units. Those growing from the ...