Geologic deposits containing fossils with remains of non-biomineralized tissues (ie
Konservat-Lagerstätten) provide key insights into ancient organisms and ecosystems. Such …

The evolutionary trajectory of early complex life on Earth is interpreted largely from the
fossils of the Precambrian soft-bodied Ediacara Biota, which appeared and evolved during a …

Authoritative, accessible, and updated introduction to sedimentary rocks for undergraduate
students Sedimentary Petrology provides readers with a concise account of sedimentary …

The Martian surface is cold, dry, exposed to biologically harmful radiation and apparently
barren today. Nevertheless, there is clear geological evidence for warmer, wetter intervals in …

Exceptionally preserved fossils are the product of complex interplays of biological and
geological processes including burial, autolysis and microbial decay, authigenic …

Sponges are one of the critical groups in understanding the early evolution of animals.
Traditional views of these relationships are currently being challenged by molecular data …

The beginning of the Phanerozoic saw two biological events that set the stage for all life that
was to come:(a) the Cambrian Explosion (the appearance of most marine invertebrate …

Rock outcrops of the sedimentary–stratigraphic record often reveal bedding planes that can
be considered to be true substrates: preserved surfaces that demonstrably existed at the …

Mobility represents a key innovation in the evolution of complex animal life. The ability to
move allows for the exploration of new food sources, escapes from unfavorable …

Estimates for animal antiquity exhibit a significant disconnect between those from molecular
clocks, which indicate crown animals evolved∼ 800 million years ago (Ma), and those from …