description Paradoxides davidis Overview
Paradoxides davidis is a species of large trilobite that lived during the Middle Cambrian period, with fossils primarily found in Wales. It is recognized as one of the earliest trilobite species to be formally described from the British Isles, contributing significantly to early paleontological studies in the region. The species is notable for its impressive size, capable of reaching lengths of over 30 centimeters, as well as its distinctive, elongated genal spines extending from the head shield. These anatomical features have made it a prominent index fossil for dating Cambrian rock layers.
help Paradoxides davidis FAQ
Where in Wales is Paradoxides davidis found?
Paradoxides davidis is associated with Middle Cambrian rocks in the St David's area of Pembrokeshire. The species name honors the Welsh locality rather than a person named David.
How large was Paradoxides davidis?
It was one of the larger British Cambrian trilobites, with substantial specimens extending to several tens of centimeters. Its long genal spines make a complete fossil look even larger.
Why is Paradoxides davidis important to British paleontology?
It was among the early trilobites formally documented from the British Isles and helped establish the significance of the Cambrian rocks around St David's. Paradoxides species also became useful markers for correlating Middle Cambrian strata.
How can Paradoxides davidis be recognized?
Look for a large, elongated body, a prominent central glabella, and long spines projecting backward from the head. Those proportions separate it from compact Welsh Cambrian trilobites such as Agnostus and related small agnostids.
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