ancient hairy tick found in New Jersey

John R. Grehan jrg13 at PSU.EDU
Tue Apr 10 12:12:34 CDT 2001

>  report
>a 90 million year old, hairy backed, tick Carlos jerseyi, embedded in
>amber from New Jersey. Apparently this pushes back an estimate of the
>age of the order (Acarina?) some 50 million years.

This is a nice example of fossils representing the minimal age of fossilization
rather than the absolute phylogenetic age of a lineage. Although 'everyone'
this distinction is often ignored, particularly in biogeography and with
clocks (although sometimes with propaganda to convince the reader that
the fossil record in question is accurate, reliable, precise, well known etc.).

John Grehan

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