SIRlíkan

Sírlíkán is a genus of extinct arachnids that lived during the Carboniferous period, approximately 326 to 299 million years ago. The name Sírlíkán is derived from the Old Irish words "sírl" meaning thread and "líkan" meaning spider, possibly due to the arachnid's similarities in web-spinning behavior.

Sírlíkán fossils have been discovered in what is now the Czech Republic and have been found in association with other arachnids and early insects of the Carboniferous period. These arachnids exhibited a relatively primitive body plan, typically featuring eight legs, a hard exoskeleton, and no fangs or threads used in web-spinning in the same manner as modern spiders.

Estimates of the Sírlíkán arachnid's body length vary but generally considered small, typically around a few millimeters. The fossil record indicates that these spiders likely played a small part in the ecosystem, hunting smaller invertebrates and providing a medium for nutrient transfer. Other areas of Sírlíkán may be inferred from texture patterns found in casts preserved from these species, suggesting segmented abdomen patterns identical to or similar to those found in scorpions and, to a much larger extent, spiders.

Textiles different from those preserved in spider-like imprints have been noted from preserved specimens. These patterns have been analyzed and suggest silent courses other than spider web styles, which from early specimens very close to modern arachnid methods are far less like than not reversed, but unique in relation conserving predator presence impressions in both plates preserved with exact possible evidence only.