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What is this section mostly about?

Plant-eating dinosaurs had teeth of various shapes designed for their particular diets. Triceratops, for example, had hundreds of teeth that formed a solid “wall” with sharp ridges. The teeth were used to chop off vegetation. Other plant eaters had wide flat teeth that they used to grind up tough vegetation. The long-necked dinosaurs had long pencil-like teeth that they used to rake the leaves off branches. These dinosaurs swallowed the leaves whole. They also ingested small stones, called gastroliths, most likely to grind up the food in their stomachs, much the same way modern birds, such as parakeets and chickens, do today.

• The different types of dinosaurs

• How much plant eating dinosaurs ate.

• Plant eating dinosaurs and their teeth.

• The difference between meat eating and plant eating dinosaurs.

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What are gastroliths?

Plant-eating dinosaurs had teeth of various shapes designed for their particular diets. Triceratops, for example, had hundreds of teeth that formed a solid “wall” with sharp ridges. The teeth were used to chop off vegetation. Other plant eaters had wide flat teeth that they used to grind up tough vegetation. The long-necked dinosaurs had long pencil-like teeth that they used to rake the leaves off branches. These dinosaurs swallowed the leaves whole. They also ingested small stones, called gastroliths, most likely to grind up the food in their stomachs, much the same way modern birds, such as parakeets and chickens, do today.

• Small Stones ingested by dinosaurs

• Plant eating teeth.

• A type of dinosaur

• A plant eating dinosaur's stomach

What sentence helped you determine the meaning of gastroliths?

Plant-eating dinosaurs had teeth of various shapes designed for their particular diets. Triceratops, for example, had hundreds of teeth that formed a solid “wall” with sharp ridges. The teeth were used to chop off vegetation. Other plant eaters had wide flat teeth that they used to grind up tough vegetation. The long-necked dinosaurs had long pencil-like teeth that they used to rake the leaves off branches. These dinosaurs swallowed the leaves whole. They also ingested small stones, called gastroliths, most likely to grind up the food in their stomachs, much the same way modern birds, such as parakeets and chickens, do today.

• Plant-eating dinosaurs had teeth of various shapes designed for their particular diets.

• The long-necked dinosaurs had long pencil-like teeth that they used to rake the leaves off branches.

• Plant-eating dinosaurs had teeth of various shapes designed for their particular diets. Triceratops, for example, had hundreds of teeth that formed a solid “wall” with sharp ridges.

• They also ingested small stones, called gastroliths, most likely to grind up the food in their stomachs, much the same way modern birds, such as parakeets and chickens, do today.

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What new information did you learn about dinosaurs?

While plant eating dinosaurs mostly had teeth used for grinding, most meat eating dinosaurs, such as Tyrannosaurus, had teeth that were pointed, slightly curved backwards, and serrated. The sharp points pierced the meat, and the serrations helped slice it by catching and tearing muscle fibers. Meat eaters didn’t chop or grind their food; they swallowed chunks whole.

• Meat eating dinosaurs had different teeth than plant eating dinosaurs.

• Meat eating dinosaurs were much scarier than plant eating dinosaurs.

• There were more Meat Eating dinosaurs than plant eating dinosaurs.

• Meat eating dinosaurs ate the plant eating dinosaurs.

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What connections do you make between Selection #1 and Selection #2?

Selection #1

Plant-eating dinosaurs had teeth of various shapes designed for their particular diets. Triceratops, for example, had hundreds of teeth that formed a solid “wall” with sharp ridges. The teeth were used to chop off vegetation. Other plant eaters had wide flat teeth that they used to grind up tough vegetation. The long-necked dinosaurs had long pencil-like teeth that they used to rake the leaves off branches. These dinosaurs swallowed the leaves whole. They also ingested small stones, called gastroliths, most likely to grind up the food in their stomachs, much the same way modern birds, such as parakeets and chickens, do today.

Selection #2

While plant eating dinosaurs mostly had teeth used for grinding, most meat eating dinosaurs, such as Tyrannosaurus, had teeth that were pointed, slightly curved backwards, and serrated. The sharp points pierced the meat, and the serrations helped slice it by catching and tearing muscle fibers. Meat eaters didn’t chop or grind their food; they swallowed chunks whole.

• Both selections teach about T-Rex

• Both selections are teaching about dinosaur teeth.

• Both selections explain why plant eaters grind their food.

• Selection 1 teaches more than selection 2

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