Fossils were thought to lack original organic molecules, but chemical analyses show that
some can survive. Dinosaur bone has been proposed to preserve collagen, osteocytes, and …

Background Mineralized and permineralized bone is the most common form of fossilization
in the vertebrate record. Preservation of gross soft tissues is extremely rare, but recent …

A scanning electron microscope survey was initiated to determine if the previously reported
findings of “dinosaurian soft tissues” could be identified in situ within the bones. The results …

The study of microbial fossils involves a broad array of disciplines and covers a vast diversity
of topics, of which we review a select few, summarizing the state of the art. Microbes are …

The Ediacaran Doushantuo biota has yielded fossils interpreted as eukaryotic organisms,
either animal embryos or eukaryotes basal or distantly related to Metazoa. However, the …

Limited taxonomic classification is possible for Archaean microbial mats and this is a
fundamental limitation in constraining early ecosystems. Applying Fourier transform infrared …

We describe a novel type of arthropod bioerosion trace fossil, Amphifaoichnus seilacheri
new igen., new isp., associated with sauropod bones from the Upper Cretaceous (Coniacian …

The biogenicity of fossil microbial biomorphs is often debated because their morphologies
are poorly informative and the chemical, structural and isotopic signatures of putative …

Of various problems that have hindered progress in documenting the Precambrian history of
life, the difficulty in distinguishing between bona fide microbial fossils and nonbiological …

The study of well-preserved organic matter (OM) within mineral concretions has provided
key insights into depositional and environmental conditions in deep time. Concretions of …