Part of the digestive tract is also preserved and is filled with mid-sized fish remains. The shape of these remains may outline the true shape of the corresponding part of the digestive tract, most likely the colon. The presence of scales and undigested bones in the colon suggests that "Platecarpus" and other mosasaurs processed food quickly and did not thoroughly digest and absorb all food in the gastrointestinal tract. Coprolites from the mosasaur "Globidens" are also suggestive of low digestion and absorption rates as they contain masses of crushed bivalve shells.