Understanding biomineralization in the fossil record

A Pérez-Huerta, I Coronado, TA Hegna - Earth-Science Reviews, 2018 - Elsevier
Biomineralization–the formation of minerals by organisms–is a key aspect in the
understanding of the fossil record. Knowing how biominerals form and their properties is …

The diverse terminology of reptile eggshell microstructure and its effect on phylogenetic comparative analyses

LJ Legendre, S Choi, JA Clarke - Journal of Anatomy, 2022 - Wiley Online Library
Reptile eggshell ensures water and gas exchange during incubation and plays a key role in
reproductive success. The diversity of reptilian incubation and life history strategies has led …

[HTML][HTML] Microstructural and crystallographic evolution of palaeognath (Aves) eggshells

S Choi, ME Hauber, LJ Legendre, NH Kim, YN Lee… - Elife, 2023 - ncbi.nlm.nih.gov
The avian palaeognath phylogeny has been recently revised significantly due to the
advancement of genome-wide comparative analyses and provides the opportunity to trace …

[HTML][HTML] A comparative study of eggshells of Gekkota with morphological, chemical compositional and crystallographic approaches and its evolutionary implications

S Choi, S Han, NH Kim, YN Lee - PLoS One, 2018 - journals.plos.org
The Gekkota is an important clade in the evolution of calcified eggshells in that some of its
families lay rigid eggshells like archosaurs. However, the fundamental differences and …

Electron backscatter diffraction (EBSD) analysis of maniraptoran eggshells with important implications for microstructural and taphonomic interpretations

S Choi, S Han, YN Lee - Palaeontology, 2019 - Wiley Online Library
Electron backscatter diffraction (EBSD) is a useful tool for gathering crystallographic
information from carbonate biominerals because it maps out the orientation of crystal grains …

Comparative crystallography suggests maniraptoran theropod affinities for latest Cretaceous European 'geckoid'eggshell

S Choi, M Moreno‐Azanza, Z Csiki‐Sava… - Papers in …, 2020 - Wiley Online Library
Thin fossil eggshell from Upper Cretaceous deposits of Europe, characterized by nodular
ornamentation similar to modern gekkotan eggshell, has mostly been interpreted as …

Preservation of aragonite in Late Cretaceous (Campanian) turtle eggshell

S Choi, NH Kim, HI Kim, JJ Kweon, SK Lee… - Palaeogeography …, 2022 - Elsevier
Among amniotes, turtles are the only clade that lay aragonitic eggs. Because aragonite is a
metastable mineral, unequivocal preservation of aragonite in fossil turtle eggs has only been …

Triassic sauropodomorph eggshell might not be soft

S Choi, TR Yang, M Moreno-Azanza, S Zhang, NH Kim - Nature, 2022 - nature.com
The fossil record of dinosaur eggs is highly biased; in contrast to the relatively rich egg
record for theropods and sauropodomorphs 1, 2, the characteristics of ceratopsian eggs …

Raman spectroscopy detects amorphous carbon in an enigmatic egg from the Upper Cretaceous Wido Volcanics of South Korea

S Choi, SK Lee, NH Kim, S Kim, YN Lee - Frontiers in Earth Science, 2020 - frontiersin.org
Raman spectroscopy has been widely used in micropaleontology and organic geochemistry
to identify carbonaceous materials and evaluate their thermal maturity in fossils or …

Combined use of electron and light microscopy techniques reveals false secondary shell units in Megaloolithidae eggshells

M Moreno-Azanza, B Bauluz, JI Canudo, JM Gasca… - PLoS …, 2016 - journals.plos.org
Abnormalities in the histo-and ultrastructure of the amniote eggshell are often related to
diverse factors, such as ambient stress during egg formation, pathologies altering the …