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A 550-million-year-old sponge fossil may have lacked a skeleton entirely — rewriting how the first animals evolved
When paleontologists picture the earliest animals, they tend to imagine something with at least a rudimentary skeleton: a ...
An "extraordinary" species of fossil sponge dating back 315 million years has been discovered near the Cliffs of Moher in County Clare. The fossil sponge, named Cyathophycus balori, measures 50cm and ...
A 550-million-year-old sea sponge fossil discovered in China is helping scientists resolve a 160-million-year gap in the early history of animal life. The finding offers exceptional physical proof ...
Prof. YUAN Xunlai from the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences and his team have discovered a late Ediacaran crown-group sponge, Helicolocellus, from the ...
Molecular clocks, which use the mutation rate of biomolecules to deduce how long ago two species diverged, and phylogenetics (the evolutionary relationships between species) can tell us when sea ...
WASHINGTON (AP) — A Canadian geologist may have found the earliest fossil record of animal life on Earth, according to a report published Wednesday in the journal Nature. Around a billion years ago, a ...
Microscopic squiggles found in 890-million-year-old Canadian reef rocks may represent the oldest animal body fossils, ...
WASHINGTON (AP) — A Canadian geologist may have found the earliest fossil record of animal life on Earth, according to a report published Wednesday in the journal Nature. Around a billion years ago, a ...
The function of dissepiments and marginaria in the Rugosa (Cnidaria, Zoantharia) / J.E. Sorauf -- Axial increase in some early tabulate corals / D.-J. Lee ... [et al.] -- Biometric analysis of ...
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