THE SHARKS

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Hybodont Shark
Lonchidion babulskii
aka Lissodus babulskii

Age - Cretaceous  Commonality - Common?

The extinct hybodont sharks of the genus Lonchidion were extremely small, reaching a length of about 6 inches. The fossil records indicate that most of the sharks in this genus inhabited freshwater. Unlike most species of Lonchidion, L. babulskii is found in marine sediments (Upper Campanian). The teeth of L.  babulskii are very different from those of Hybodus, they are small, averaging less than 5 mm across. The teeth are low and laterally elongated with a distinct protuberance on the enamel surface and a well developed crest on the crown. It is rare to fine teeth with the roots intact. Screening the silt with a fine meshed screen is usually required to find specimens of this size. Along with the teeth, dorsal fin spines and cephalic claspers can also be found. The claspers, which are only present on the male was used to hold the female during mating.

 


 

Lissodus babulskii

The teeth of L. babulskii were used to crush prey.
occlusal view
Monmouth County, NJ.

 


 

Labial, lingual and side views.
These teeth are small, reaching a max of about 5 mm
across.


 

Very rarely does the root fossilize. This is not isolated to NJ, but
consistent in all locations.
This upside down tooth shows the typical condition of the root.  
 


 

 


 

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