A microworld in Triassic amber

Article Abstract:

Two-hundred-and- twenty million-year-old droplets of amber containing bacteria, fungi, algae and protozoan that are assignable to extant genera that provide insight into the evolution and palaeoecology of Lower Mesozoic microorganism are described. The findings reveal that different genera, and even species, of microbial taxa were able to survive geological epochs, while higher levels in food webs, on the other hand, were shaped by environmental changes such as those that caused the mass extinction at the Cretaceous-Palaeogene boundary.

Italy, Science & research, History, Environmental aspects, Mesozoic Era, Amber

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Evidence for a late Triassic multiple impact event on Earth

Article Abstract:

Evidence for multiple impact event on Earth is provided. Five terrestrial impact structures were found to have comparable ages coincident with the Norian stage of the Triassic period. The impact structures were plotted on a tectonic reconstruction and the three largest structures may represent the remains of a crater chain of at least 4,462 km long. It is likely that the five impact structures were formed at the same time.

Geology, Stratigraphic, Stratigraphy, Collisions (Nuclear physics), Particle collisions, Triassic period

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Cretaceous mushrooms in amber

Article Abstract:

The gilled mushroom fossils found in amber stones, obtained from New Jersey, are holobasidiomycetes and may be structurally similar to mushrooms of the Marasmius and Marasmiellus genus. The fossils are from the mid-Cretaceous era and consist of a cap with gills and a central stalk. These mushrooms formed smooth elliptical spores. The evolution of holobasidiomycetes and their morphological changes are discussed.

Mushrooms, Cretaceous period, Paleobotany

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