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Cretaceous Bivalves
...oysters competing for the
'most ugly' title
'Oyster' is is a general word given to a group of bivales that have unequal valves and lack hinge teeth...they often also lack good looks. The taxonomy of fossil oysters is contoversial as, like many of their modern relatives, they are highly variable in shape.
4.5 cm
9 cm
Texigryphea navia
'Ostrea'
Silicified specimen
14cm
10 cm
Exogyra laeviuscula
Exogyra ponderosa
'Devils Toenail'...one of the largest and thickest shelled of Cretaceous bivalves
7 cm
4 cm
Cerastostrean taxana
Illymatogyra arientina
4cm -10cm
4 cm
Texigryphea marcoui
'Serpula'
worm tubes are common finds encrusted on shells. These worms, on the class Polychaeta have no outward difference of appearance over 300 million years.
Inoceramus sp.
Various species from the Bearpaw Sea. This is an enigmatic group with thick, uneven valves.
Music is a traditional French Canadian sea  song...later adapted to other folk cultures.
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Cretaceous Room
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