Mississippian Sharks Of The
Prospect Hill Formation
You can order any of the fossils listed below by clicking here
The Prospect Hill Formation is of Lower Mississippian age and outcrops near Kalona, Iowa. The deposit contains a
diverse assemblage of conodonts and vertebrates, all of which appear almost exclusively as microfossils. The vast
majority of Palaeozoic shark teeth are actually microscopic in size and unlike their Mesozoic cousins rarely attain
large sizes. There are many genera of sharks known from the Palaeozoic, but as most can only be collected by
dissolving shales and limestone in acid they are rarely seen for sale. Offered below is a rare sample of middle
Palaeozoic sharks representing close to a dozen different genera. The Prospect Hill sharks have never been studied
and many species may be undescribed.

All of the specimens listed measure between ~1 and 3 mm unless noted and are housed in micropalaeontology
slides with slip case and cover. PLEASE ORDER BY SPECIMEN NUMBER. Many of the sharks belong to rare
types we have not been able to identify from the literature. Where possible we have listed the genus we think most
strongly corresponds to the available specimen. The slides are not labelled with genus or species, only geological
formation as we did not want to put anything definitive on them in case it turned out to be inaccurate. We will leave
this to the purchaser.
Deltodus sp. large #1
5 mm - £15/$25
Helodus sp. large #3
5 mm  -SOLD!
Deltodus sp. large #2
5mm - SOLD!
Deltodus sp. large #6
5 mm - £15/$25
Helodus sp. large #1
5 mm - £8/$15
All specimens show better details than the images suggest (we apologise for not being able to provide better
pictures of the specimens) and are the actual specimens you will receive.
To read and download an illustrated highly technical article on a chondrichthyan fauna that is very similar to the
Prospect Hill Formation please follow this link
Lower Mississippian Sharks Of China.
#1 Cristatodens sp.
Nice worn crown. Left side
preserves accessory cusps.
£6/$10
#6 Euselachian
Rare complete crushing tooth
crown - £15/$35
#4 Thrinacodus sp.
Partial tricuspid teeth.
£6/$10
#5 Deihim sp.
Complete protacrodont type
tooth  -  SOLD!
#12 Helodus sp.
Near complete crown. Distinct
tubular dentine - £6/$10
#2 Lissodus?
Partial crown with notable
labial peg - £3/$5
#3 Lissodus?
Near complete crown with
notable labial peg - £6/$10
#7 Unknown shark
Rare complete tooth crown
£15/$35
#8 Protacrodont?
Complete crown. Prominent
central cusp - £8/$12
Complete highly unusual
tooth  -  SOLD!
#10 Deltodus
Nice near complete crown
£6/$10
#11 Unknown shark
Complete highly unusual
tooth  -  SOLD!
#17 Cristatodens sp.
Near complete crown with
strong cusp. £6/$10
#18 Deltodus
Nice near complete crown
£6/$10
#19 Desmiodus sp.?
Rare near complete tooth
crown - SOLD!
#20 Helodus sp.
Complete flat crown. Distinct
tubular dentine - £10/$15
#21 Unknown shark
Complete highly unusual
tooth  -  £15/$25 Rare!
#22 Protacrodont
Complete highly unusual
tooth  -  SOLD!
#23 Lissodus?
Very nice complete tooth
crown - £15/$25
#24 Protacrodus sp.
Complete multicuspid tooth
SOLD!
#26 Desmiodus sp.?
Rare near complete tooth
crown - £10/$15
#27 Helodus sp.
Complete crown. Distinct
tubular dentine - £10/$15
#25 Unknown shark
Complete tooth with distinct central cusp
£15/$25 Rare!
#31 Helodus
Complete tooth with root
SOLD!
#34 Cooleyella
Complete tooth with root
SOLD!
#33 Lissodus?
Crown with labial peg
£6/$10
#32 Unknown shark
Complete tooth with root
SOLD!
#35 Euselachian
Near complete crushing tooth
crown - £6/$10
#37 Cooleyella
Complete tooth with root
£15/$25
#38 Thrinacodus sp.
Near Complete tooth with root
SOLD!
#36 Unknown shark
Near complete crushing tooth
crown - £3/$5
#39 Euselachian
Complete crushing tooth
SOLD!
#41 Helodus?
Near complete tooth with root
£8/$12
#40 Helodus
Complete crushing tooth
£12/$20
#45 Protacrodus
Near complete tooth crown
£8/$12
#48 Helodus?
Complete margianl tooth with
root - £12/$20 Rare!
#47 Deltodus
Near complete tooth crown
£12/$20
#49 Desmiodus
Complete tooth crown
£15/$25
#50 Unknown shark
Very distinct crushing tooth
£15/$25