description Paradoxides gracilis Overview
Middle Cambrian trilobite widespread across Baltica and Avalonia, widely used as a biostratigraphic index fossil for the middle Cambrian Series 3.
insights Ranking position
Paradoxides gracilis ranks #23 of 282 in the Trilobite ranking, behind Isotelus rex, ahead of Hollardops.
help Paradoxides gracilis FAQ
How old is a Paradoxides gracilis fossil?
It comes from the middle part of the Cambrian Period, more than 500 million years ago. The species is especially associated with Middle Cambrian strata in the Czech Republic.
Where are Paradoxides gracilis fossils commonly found?
Well-known specimens come from the Jince Formation in the Barrandian region of the Czech Republic. Related Paradoxides faunas also occur across areas once belonging to Baltica and Avalonia.
Why is Paradoxides gracilis useful as an index fossil?
Its recognizable form and restricted geological range help paleontologists correlate rock layers of similar age. The Paradoxides gracilis Zone is used particularly in Central European Cambrian stratigraphy.
What features identify Paradoxides gracilis as a trilobite?
It has the three-lobed body plan, segmented thorax and broad head shield typical of trilobites. Its relatively large body and elongated cheek spines help distinguish paradoxidids from many smaller Cambrian forms.
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