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Ctenizidae (/ ˈ t ə n ɪ z ə d iː / tə-NIZZ-ə-dee) [2] is a small family of mygalomorph spiders that construct burrows with a cork-like trapdoor made of soil, vegetation, and silk. . They may be called trapdoor spiders, as are other, similar species, such as those of the families Liphistiidae, Barychelidae, and Cyrtaucheniidae, and some species in the Idiopidae and Nemesiid
Euctenizidae, a family of spiders that make wafer-like or cork-like trapdoors; Halonoproctidae, a family of spiders that make wafer-like or cork-like trapdoors and includes the phragmotic genus Cyclocosmia; Idiopidae, a family of 'spurred-trapdoor spiders' or 'armoured trapdoors' mostly in Southern Hemisphere
Originally, trapdoors were sack traps in mills, and allowed the sacks to pass up through the mill while naturally falling back to a closed position. [3] Many buildings with flat roofs have hatches that provide access to the roof. On ships, hatches—usually not flush, and never called trapdoors—provide access to the deck.
Many members are known as trapdoor spiders due to their creation of trapdoors over their burrows. Other prominent groups include Australian funnel web spiders and tarantulas, with the latter accounting for around one third of all mygalomorphs.
The flowing water makes its way over wooden logs or plastic tubes strapped to the base of the river channel, which disrupt the smooth flow of the water, thus providing the ride with its 'rapids'. Most river rapid rides also feature a wave section, where the river channel widens and a wave machine creates waves at a 90-degree angle to the flow ...
The water park at Sacramento’s fairgrounds has operated under the Raging Waters brand since 2007. Raging Waters ends lease in Sacramento. Will Cal Expo’s water park reopen?
Brackett Field, Raging Waters, and Fairplex (formerly the Los Angeles County Fairgrounds) are all adjacent to Puddingstone Reservoir, which is inside Bonelli Regional Park. In 1923, the County of Los Angeles Flood Control District purchased a large piece of land to construct a dam to hold back floodwaters from an area covering 30.3 square miles ...
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