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Larger marine animals, like this fossilized, 41-centimeter Dickinsonia costata, evolved around the time that our planet’s magnetic field was weaker and oxygen levels were higher. Shuhai Xiao
A photograph shows a cast of a 560 million-year-old Dickinsonia costata fossil found in South Australia. At more than a meter in length, the creature is the largest known animal from that...
These fronds and fans include Earth’s earliest known animals, such as the blob-like Dickinsonia. Scientists theorize that without the protection of the magnetic field roughly 600 million years ...
Evidence suggests a weak magnetic field millions of years ago may have fueled the proliferation of life on Earth. The Ediacaran Period, spanning from about 635 to 541 million years ago, was a ...
Dickinsonia displays the characteristic quilted appearance of Ediacaran enigmata. Spriggina was originally interpreted as annelid or arthropod. However, lack of known limbs, and glide reflected isomers instead of true segments, rejects any such classification despite some superficial resemblance.
Evidence suggests a weak magnetic field millions of years ago may have fueled the proliferation of life. The Ediacaran Period, spanning from about 635 to 541 million years ago, was a pivotal time in Earth’s history.
Impresión fósil de Dickinsonia, un ejemplo de fauna del Período Ediacárico, descubierto en la actual Australia. Sería parte de la explosión de biodiversidad generada hace unos 590 millones ...
