Arachnid from the Past: Terrifyingly Large Spider Fossil Unearthed Near Gulgong Astonishes Paleontologists - Media News 48

Arachnid from the Past: Terrifyingly Large Spider Fossil Unearthed Near Gulgong Astonishes Paleontologists

Ancient Arachnid Unearthed: Terrifyingly Large Spider Fossil Discovered near Gulgong

A team of Australian scientists led by Australian Museum (AM) and University of New South Wales (UNSW) paleontologist Dr. Matthew McCurry have formally named and described a fossil spider, Megamonodontium mccluskyi, which is between 11–16 million years old. The findings on this new genus of spider have now been published in the Zoological Journal of the Linnean Society.

See the spectacular fossils from a newly discovered prehistoric rainforest

Found at McGraths Flat, NSW, a fossil site known for its iron-rich rock called “goethite,” the new genus of spider is the first ever spider fossil of the Barychelidae family to be found. Similar to the living genus, Monodontium (a brushed trapdoor spider) but five times larger (carapace length, ~10 mm; entire spider, ~50mm from toe to toe), the spider was named after Dr. Simon McClusky who found the specimen. A geospatial scientist based in Canberra, McClusky volunteers his time helping on palaeontological excavations.

Fossils of a Prehistoric Rainforest Hide in Australia's Rusted Rocks  #fossil #paleontology #rainforest #australia #spider #insect - Earth  Science Club of Northern Illinois - ESCONI

Dr. McCurry said that there have been very few fossil spiders found in Australia which makes the discovery very significant.

“Only four spider fossils have ever been found throughout the whole continent, which has made it difficult for scientists to understand their evolutionary history. That is why this discovery is so significant, it reveals new information about the extinction of spiders and fills a gap in our understanding of the past.”

“The closest living relative of this fossil now lives in wet forests in Singapore through to Papua New Guinea. This suggests that the group once occupied similar environments in mainland Australia but have subsequently gone extinct as Australia became more arid.”

Queensland Museum arachnologist, Dr. Robert Raven, who was the supervising author of the study said this was the largest fossil spider to be found in Australia.

“Scanning electron microscopy allowed us to study minute details of the claws and setae on the spider’s pedipalps, legs and the main body. Setae are hair-like structures that can have a range of functions. They can sense chemicals and vibrations, defend the spider against attackers and even make sounds.”

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