A diverse Ediacaran community was discovered in 1995 in Sonora, Mexico, and is approximately 555 million years in age, roughly coeval with Ediacaran fossils of the Ediacara Hills in South Australia and the White Sea on the coast of Russia.

The fossil record from the Ediacaran Period is sparse, as more easily fossilized hard-shelled animals had yet to evolve. The Ediacaran biota include the oldest definite multicellular organisms (with specialized tissues), the most common types of which resemble segmented worms, fronds, disks, or immobile bags.

埃迪卡拉生物群（英語： Ediacaran biota ）又稱艾迪卡拉生物群 [1] ，是一群神秘的盤狀、管状、叶状或袋狀形态的前寒武纪 生物，生活在元古宙末期的埃迪卡拉紀（5億8000萬年前~5億4200萬年前）。 埃迪卡拉生物群是迄今已知最早的大规模多样化并出现特化 解剖结构的多細胞生物群体 [註 1] ，因其模铸 ...

However, in the latest Proterozoic — a time period now called the Ediacaran, or the Vendian, and lasting from about 635 to 542 million years ago* — macroscopic fossils of soft-bodied organisms can be found in a few localities around the world, confirming Darwin's expectations.

Jan 6, 2025 · A new study describes a fossilized ecdysozoan from Ediacaran rocks, extending the body fossil record for this hyper-diverse group and emphasizing the pivotal insights provided by Ediacaran fossils in documenting the early evolutionary history of major animal clades.

These Ediacaran fossils found at Nilpena offer a remarkable insight into Earth’s transformation over half a billion years ago, when our planet evolved from a microbial world into one teeming with diverse life forms. One can step back in time and walk across the ancient seafloor, where countless fossils reveal a once-thriving marine ecosystem.

Ediacara fauna, unique assemblage of soft-bodied organisms preserved worldwide as fossil impressions in sandstone from the Ediacaran Period (approximately 635 million to 541 million years ago). Some scientists have suggested that the Ediacara fauna were the first metazoans.

Nov 13, 2024 · This sudden appearance of a fossil record of bilaterian animals lies at the core of the Cambrian explosion hypothesis, which suggests a sudden and dramatic diversification of bilaterian animals and their body plans within the early …

Ediacaran Period, the uppermost division of the Proterozoic Eon of Precambrian time, extending from approximately 635 million years ago to 541 million years ago. The Ediacaran Period produced some of the earliest known evidence of the evolution of …

Macroscopic fossils of the Ediacara biota span the upper half of the Ediacaran Period, from 575 to 542 Myr ago (Grotzinger et al. 1995; Martin et al. 2000; Bowring et al. 2003; Condon et al. 2005). Since most of these fossils occur as soft-bodied impressions in relatively coarse-grained siliciclastic sedimentary rocks, a comprehensive array of ...