Dickinsonia costata, an iconic Ediacaran organism, displays the characteristic quilted appearance of Ediacaran enigmata. Ediacara (Vendian) biota consisted of enigmatic tubular and frond-shaped, mostly sessile organisms which lived during the Ediacaran Period (ca. 635–542 Ma). Trace fossils of these organisms have been found worldwide, and represent the earliest known complex multicellular organisms. Ediacara biota radiated in an event called the Avalon Explosion, 575 million years ago. Dickinsonia Costata, Ediacaran Periodic, Sea Pens, Life Drawing, Sessil Organic, Bags Fossils, Enigmatic Tubular, Ediacara Biota, Biota Consistency
2 specimens of the odd fossil Dickinsonia, a 550-Ma-old fossil from the Ediacaran Hills of S AU. What is it? After more than 60 yrs of study, we’re still not sure, although we think it’s an animal
Ammonite fossil: These creatures lived between 240 - 65 million years ago, when they became extinct along with the dinosaurs. 'ammonite' (usually lower-case) originates from the Greek Ram-horned god called Ammon. Ammonites belong to a group of predators known as cephalopods, which includes their living relatives the octopus, squid, cuttlefish and nautilus. Ammonites moved by jet propulsion, expelling water through a funnel-like opening to propel themselves in the opposite direction.