Tag Archives: early

Early Devonian Fish

Paleoichthyologists in China have re-described Nochelaspis maeandrine, a species of large-sized eugaleaspiform fish that lived 415 million years ago (Devonian period). Life restoration of Nochelaspis maeandrine. Image credit: Dinghua Yang. Nochelaspis maeandrine was first described in 1987 from a nearly complete head shield found in the Xishancun Formation near Qujing …

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Lake Breach Floods

Massive floods from overflowing crater lakes were responsible for eroding at least 24% of the volume of incised valleys on early Mars, according to new research led by University of Texas at Austin planetary scientists. Valley networks and paleolake outlet canyons on Mars: (a) distribution of analyzed valley networks (black) …

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Early Eocene Primate

Dental cavities or caries is a common disease among modern humans, affecting almost every adult. New research shows that Microsyops latidens, a species of stem primate from the Early Eocene epoch, had a high prevalence of dental caries (7.48% of individuals), with notable variation through time, reaching 17.24% of individuals …

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Plants Found in Australia

Until now, the first fossil evidence of land plants was from the Devonian period (420 million years ago). However, molecular evidence suggests an earlier origin in the Cambrian period. In a new paper in the journal Science, paleontologists described an assemblage of spore-like microfossils from Early Ordivician (480 million years …

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Earth’s Early Bombardment

Once the Earth was fully formed about 4.5 billion years ago, its subsequent evolution was governed by complex geophysical processes. The planet, however, was not in isolation from the rest of the Solar System, and these processes were strongly affected by interplanetary collisions for hundreds of million years. Planetary scientists …

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Mammoths Co-Existed

The so-called Mount Holly mammoth (Mammuthus sp.) lived approximately 12,800 years ago in what is now New England, a region comprising six states in the Northeastern United States, and potentially overlapped with the first human settlers of the region, according to new research from Dartmouth College. The woolly mammoth (Mammuthus …

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Sequence Mitochondrial

Scientists have extracted and sequenced mitochondrial DNA from a partial femur of an ancient dog that lived in Alaska 10,150 years ago. Their results, published in the Proceedings of the Royal Society B, demonstrate that the animal belonged to a lineage of dogs that diverged from Siberian dogs around 16,700 …

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Evolutionary Link

Paleontologists have described the first three-dimensional preservation of soft tissue in Namacalathus hermanastes, a skeletal metazoan (multicellular animal) that lived some 547 million years ago (Ediacaran period) in what is now Namibia, and established a strong evolutionary link between Ediacaran and early Cambrian metazoans. Namacalathus (individuals numbered). Centimeter scale. Image …

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Early Solar System

  Every asteroid that falls to Earth is a potential window into the origins of the solar system, but scientists have stumbled upon something quite strange when studying a fragment of the Almahata Sitta asteroid. It contains evidence of a huge, previously unknown object in our solar system — perhaps …

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48 Million Years Ago

A new genus and species of medium-sized python that lived during the early-middle Eocene period has been identified from several nearly complete skeletons and partial skulls found in Germany. Messelopython freyi. Image credit: Senckenberg Research Institute. The newly-identified python species lived in what is now Germany, approximately 47.6 million years …

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