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Fossils found in amber, particularly from the Baltic and Myanmar (Burma), have been assigned to a number of extant and extinct genera placed in the family Archaeidae. [5] The extinct species Burmesarchaea grimaldii (syn. Afrarchaea grimaldii) was found in Burmese amber dated to 88–95 Mya. [6]
Amber is fossilized tree resin. Examples of it have been appreciated for its color and natural beauty since the Neolithic times, [1] and worked as a gemstone since antiquity. [2] Amber is used in jewelry and as a healing agent in folk medicine. There are five classes of amber, defined on the basis of their chemical constituents.
The age of the amber has been controversial. A study in the early 1990s returned a date up to 40 million years old. [2] However, other authors have suggested a date in the Miocene, around 20–15 million years old, based on marine microfossils found in the sediment the amber is contained in. [3]
The discovery comes from a fossil of an ancient firefly species that was initially discovered in 2016, trapped in 99 million-year-old Burmese amber from northern Myanmar. The beetle is only the ...
Associated with the amber deposits at the Old Crossmans locality are fossil plants and insects preserved as fusianized charcoal remains. Ferns, gymnosperms, mosses and over one hundred angiosperm taxa have been identified from the Raritan formation lignite fossils. [9]
The amber itself is primarily disc-shaped and flattened along the bedding plane, and is typically reddish brown, with the colour ranging from shades of yellow to red. The opacity of the amber ranges from clear to opaque. Many amber pieces have thin calcite veins that are typically less than 1 mm (0.04 in), but up to 4–5 mm (0.16–0.20 in) thick.
The private sale of fossils has attracted criticism from paleontologists, as it presents an obstacle to fossils being publicly accessible to research. [2] Most countries where relatively complete dinosaur specimens are commonly found have laws against the export of fossils. The United States allows the sale of specimens collected on private ...
Arachnid fossils in Bitterfeld amber, including harvestmen/Opiliones belonging to the genus Siro (top row), unidentified mites (second row) pseudoscorpions belonging to the families Chthoniidae (left) and Pseudogarypidae (right) (third row), and crab spiders (bottom row) Geographic context of Bitterfeld amber in Eocene Europe, with Baltic amber (labelled "Gdansk") and Rovno amber also shown