Abstract The Ediacaran-Cambrian transition, which incorporates the radiation of animals,
lacks a robust global temporal and spatial framework, resulting in major uncertainty in the …

▪ Abstract The Ediacara biota (575–542 Ma) marks the first appearance of large,
architecturally complex organisms in Earth history. Present evidence suggests that the …

Abstract The Ediacaran Period follows the Cryogenian Period in the wake of a snowball
Earth glaciation and precedes the Cambrian Period with its rising tide of animal radiation. It …

Australopithecines, dinosaurs, trilobites--such fossils conjure up images of lost worlds filled
with vanished organisms. But in the full history of life, ancient animals, even the trilobites …

Ediacara fossils document an important evolutionary episode just before the Cambrian
explosion and hold critical information about the early evolution of macroscopic and …

The replacement of the late Precambrian Ediacaran biota by morphologically disparate
animals at the beginning of the Phanerozoic was a key event in the history of life on Earth …

The earliest evolution of the animals remains a taxing biological problem, as all extant
clades are highly derived and the fossil record is not usually considered to be helpful. The …

The Ediacaran–Cambrian transition signals a drastic change in both diversity and
ecosystem construction. The Ediacara biota (consisting of various metazoan stem lineages …

We construct a time scale for the 840–544Ma Neoproterozoic interval from isotopic variation
of δ13Ccarbonate and δ13Corganic, 87Sr/86Sr, and δ34Ssulfate in seawater measured …

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