Molecular phylogeny indicates that metazoans (animals) emerged early in the
Neoproterozoic era, but physical evidence is lacking. The search for animal fossils from the …

Reefs are an extraordinary natural phenomenon. Visible from outer space, coral reefs are
the largest biologically constructed features known; in close proximity their spectacular …

Reefs containing abundant calcified metazoans occur at several stratigraphic levels within
carbonate platforms of the terminal Proterozoic Nama Group, central and southern Namibia …

Winner, 2009 Victorian Premier's Literary Prize for Science Writing Among the major events
in evolutionary history, few rival in importance the appearance of animals. The Rise of …

Carbonate rocks of the lower Belt Supergroup (ca. 1.45 Ga) in west-central North America
include the Haig Brook, Tombstone Mountain, Waterton and Altyn formations which crop out …

We report SHRIMP U–Pb zircon ages from K-bentonite beds from different locations in the
Xiamaling Formation near Beijing at the northern margin of the North China Craton (NCC) …

Sažetak Authigenic seafl oor carbonate crusts include fenestrate microbialite, thrombolite,
and four types here designated: Fine-grained Crust, Sparry Crust, Hybrid Sparry Fine …

Early Neoproterozoic reefs of the Little Dal Group, Northwest Territories, are built by
stromatolites and thrombolites containing calcified filamentous cyanobacteria and interstitial …

Oolitic ironstones are iron-rich and chert-poor sedimentary rocks containing concentrically
coated grains composed of iron (oxyhydr) oxides and iron phyllosilicates that offer a unique …

Molar tooth is a series of peculiar, ptygmatically folded and spar-filled cracks in fine-grained
carbonates of Precambrian age. This sedimentary structure appears to be limited in time and …