Dermal tubercles found at Steeplehouse quarry

By May 28, 2017News

Found on a previous SDGS field trip
Name: Petrodus patelliformis (dermal denticles)
Age: Carboniferous
Location: Steeplehouse quarry, Wirksworth, Derbyshire, United Kingdom

The scale bar is in millimetres.
Petrodus patelliformis dermal denticle

Petrodus patelliformis dermal denticle

Petrodus patelliformis dermal denticle

Petrodus patelliformis dermal denticle

Petrodus patelliformis dermal denticle and associated crinoids

Additional information quoted below from the excellent ukfossils.co.uk website which I thought was very informative.

” The shark remains are the most interesting aspect of this quarry. The bedding plains of the large slabs are full of dermal tubercles of the shark-like fish, Petrodus patelliformis. These are hard to see and most are worn, but they are 5 to 8mm in size and look a bit like squashed limpets. Tiny teeth from another shark, Anachronistes fordi, can also be found. Remains from both of these sharks are normally rare from the Carboniferous, but are quite common here, suggesting that a shoal of them suffered a mass mortality event. ”

Brought to light by T&J 😉

 

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