Among Texas fossil collectors, there is a no more dedicated nor enthusiastic group than the one specializing in the collection of fossilized shark and ray i teeth. Annually, thousands of amateur paleontologists of all ages indulge in this activity for many reasons andat all levels of interest. Forthe persistent collector, teeth are found in abundance at numerous sites where Cretaceous rocks have been exposed through weathering and erosion. Popular collecting localities occurinroadcuts, quarries, creekand river - beds and at temporary exposures associated with construction for housing, highways and industry.

Building a tooth collection can be a great hobby or the beginning of a rewarding scientific endeavor, stimulating your natural curiosity about these fascinating fishes. However, CAUTION is advised. Collecting fossil shark teeth may become an obsession with you like it has for some of us! <...>

В монографии, продолжающей вышедший труд этого же автора "Акулы палеогена", обосновывается предложенное ранее деление подкласса эласмобранхий на две основные ветви - остеодонтов и ортодонтов, из которых в процессе эволюции вторая ветвь вытесняет первую.

Книга представляет интерес для широкого круга эволюционистов, морфологов, систематиков, стратиграфов и палеонтологов.