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With an estimated length of 33.9 cm (13.3 in) based on the assumption that the fossil was that of a spider, and with a leg-span estimated to be 50 centimetres (20 in), Megarachne servinei would have been the largest spider to have ever existed; exceeding the goliath birdeater (Theraphosa blondi), which has a maximum leg-span of around 30 cm (12 ...
The order Trigonotarbida is a group of extinct arachnids whose fossil record extends from the late Silurian to the early Permian (Pridoli to Sakmarian). [1] [2] [3] These animals are known from several localities in Europe and North America, as well as a single record from Argentina.
Turiasaurus is considered the largest dinosaur from Europe, [431] [432] with an estimated length of 30 m (98 ft) and a weight of 50 t (55 short tons). [426] [432] However, lower estimates at 21 m (69 ft) and 30 t (66,000 lb) would make it smaller than the Portuguese Lusotitan, which reached 24 m (79 ft) in length and 34 t (75,000 lb) in weight.
Jaekelopterus is the largest known eurypterid and the largest known arthropod to have ever existed. This was determined based on a chelicera (claw) from the Emsian Klerf Formation of Willwerath, Germany , that measures 36.4 centimetres (14.3 in) long, but is missing a quarter of its length, suggesting that the full chelicera would have been 45. ...
The genus name honors the Douglass family, who donated the specimen to Chicago’s Field Museum of Natural History, and the species name references the spines that make this arachnid so distinctive.
In a redescription of the genus, Kreischeria wiedei was recognised by Rößler and Dunlop as by far largest of all trigontarbids, measuring around 51 millimetres (2.0 in) in length. [ 1 ] History
The largest of the earwigs is the Saint Helena earwig (Labidura herculeana), which is up to 8.4 cm (3.3 in) in length. There are no recent records of this species and it is generally considered extinct. [12] The largest certainly living species is the Australian giant earwig (Titanolabis colossea), which is about 5 cm (2.0 in) long. [7]
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