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The pelican spider, *Archaeidae sp.*, is a unique spider species found in Madagascar and Australia. It belongs to an ancient lineage within the Archaeidae family, notable for its specialized hunting behavior. This spider possesses an exceptionally long neck, allowing it to prey on other spiders—a st...
The Mexican burrowing frog (Rhinophrynus dorsalis) is a highly specialized amphibian ranging from the southern United States through Mexico and Central America to Costa Rica. As the sole living member of the ancient family Rhinophrynidae, it represents a distinct evolutionary lineage. It possesses a...
Liphistius desultor is a primitive trapdoor spider from Southeast Asia, first described by Danish zoologist Jørgen Matthias Christian Schiødte in 1849. It belongs to the family Liphistiidae, the most basal living lineage of spiders, and retains vestigial abdominal segmentation — a feature lost in mo...
The lampshade spider (*Hypochilus pococki*) is an arachnid belonging to the family Hypochilidae, a group known for retaining many primitive evolutionary characteristics. Native to China, this species constructs a distinct, bell-shaped web that hangs vertically and resembles a lampshade, which is des...
Heptathela kimurai is a species of primitive, burrowing spider belonging to the family Heptathelidae, endemic to Japan. First described in 1923, it is classified as a mesothele spider, which represents the most ancient living lineage of spiders. The species is distinguished by its segmented abdomen...
