Transcript plant-eating animals - Digging-Up-The-Past

Nathan Tran 4 Gr
Mesozoic
Triassic
• Animals
• Plateosaurus (diet: Plateosaraus was an herbivore (it only ate
plants). this long-necked dinosaur ate leaves high in the trees(like
those who are conifers and cycads) with sharp-leaved shaped teeth.
Plateosaurus was about 27.5 feet (8 m) long and weighed about
1,500 pounds (700 kg).
Jurassic
• Diet: Allosaurus was a carnivore (meat-eater) who may have hunted
in packs. In these groups, Allosaurus could have ambushed even
the very large sauropods (like Diplodocus and Camarasaurus).
• This bipedal predator was up to 38 feet (12 m) long and weighed
roughly 1 to 5 tons. It had solid, heavy bones, long claws on its 3-
fingered hands, and large, powerful jaws.
Cretaceos
• Diet: Styracosaurus was an herbivore (a plant eater) that ate lowlying plants.
• Styracosaurus had a huge skull with a very large, bony, scalloped,
head frill. It had a beak, a long snout horn, two smaller brow horns,
and many horns protruding from its frill. Styracosaurus was about 18
feet (5.5 m) long, 6 feet (1.8 m) tall, and weighed up to 3 tons.
Plants in Triassic
• Leptocycas was a cycad, a primitive seed plant from the
late Triassic period. It was a palm-like tree with a long,
woody trunk and tough leaves. It lived in warm climates.
This tree was about 4.8 ft (1.5 m) tall.
• The dinosaurs evolved early in the Mesozoic Era, during
the Triassic period (about 228 million years ago). At the
start of the Mesozoic Era, the continents of the Earth
were jammed together into the supercontinent of
Pangaea; this land mass had a hot, dry interior with
many deserts. The polar regions were moist and
temperate.
Plants in Jurassic
• Conifers (like Araucarioxylon) were the dominant land
plant during the Jurassic period. Other land plants
included Ginkgophytes (like Ginkgos), club mosses,
horsetails, ferns, seed ferns, Sphenopsids (like
Neocalamites), Filincophyta (like Matonidium),
Cycadeodia (like Otozamites, Ptilophyllum, and
Cycadeoidea), and cycadophytes.
Meat-eating animals (carnivores like Tyrannosaurus rex) get
their energy by eating other animals, mostly plant-eating animals
(herbivores like Triceratops). The herbivores get their energy by
eating plants (like cycads). The plants (producers or
autotrophs) get their energy from sunlight, converting the light
into chemical energy using photosynthesis.