Our understanding of pre-Cretaceous dinosaur reproduction is hindered by a scarcity of
evidence within fossil records. Here we report three adult skeletons and five clutches of …

Reptilian (non‐avian) eggshell biomineralization is markedly different from avian eggshells.
Despite discontinuous/variable mineralization, the reptilian eggshell (like in birds) is …

Simple Summary Most previous studies on eggshell mechanics only focused on single
species or taxa and often lacked a side-by-side comparison between eggshell …

The amniotic egg fulfils a critical role in reproduction by serving as an interface between the
external environment and the embryo. Because non-avian reptiles are rarely incubated, they …

The egg tooth of squamates is a true tooth that allows them to break, tear, or cut the eggshell
during hatching. In this clade there are some uncertainties concerning the egg tooth …

Background Tooth replacement patterns of early-diverging ornithischians, which are
important for understanding the evolution of the highly specialized dental systems in …

Unlike the eggshells of other amniotes, turtle eggshells are composed of aragonite, which is
a metastable mineral. Turtle eggshells in the fossil record are therefore usually transformed …

Nearshore ground nesting of soft eggs by extinct birds is demonstrated here, providing a
new explanation for the abundance of bird fossils in early Cretaceous lacustrine …

There is a current lack of consensus on whether the ancestral parity mode was oviparity
(egg‐laying) or viviparity (live‐birth) in amniotes and particularly in squamates (snakes …

Our understanding of pre-Cretaceous dinosaur reproduction is hindered by a scarcity of
evidence within the fossil record. Here we report three adult skeletons and five clutches of …