In the 1980s, scientists at the New Mexico Museum of Natural History acquired a partial skull from a large adult from the genus Tyrannosaurus and identified the species as Tyrannosaurus rex. In 2013, Sebastian Dalman began working on the specimen and noticed small differences between the skull found in the 80s and other T. rex skulls in the museum's collection. The jaw of the New Mexico specimen was more slender, and its teeth lacked the prominent ridge of bone found behind T. rex’s eye. This evidence allowed Dalman to theorize that -------Which choice most logically completes the text?Tyrannosaurus skulls were frequently misidentified as T. rex.eliminatethe New Mexico specimen was a million years older than the T. rex.eliminateTyrannosaurus habitat ranged from North America to Alaska and Mexico.eliminatethe New Mexico specimen was another species of Tyrannosaurus entirely

For many years, there was no evidence of small plant-eating dinosaurs in modern-day North Texas. In fact, dinosaur fossils from about 100 million years ago in North America have been something of a rarity, making the history of the Mesozoic Era on the continent unclear. In a discovery that both disproves the conclusion that small plant-eating dinosaurs never lived in Texas and provides clarity on this era in the area, scientists from the Perot Museum of Nature and Science discovered a jawbone fossil near Lake Grapevine, Texas and determined it belonged to a small herbivorous dinosaur.According to the text, why was the Perot Museum’s discovery of the jawbone fossil significant?The jawbone fossil constitutes the first evidence found by scientists that herbivorous dinosaurs lived more than 100 million years ago.eliminateThe jawbone fossil helps establish that plant-eating dinosaurs’ defining features were their jawbones.eliminateThe jawbone fossil helps establish a more accurate timeline of the evolution of herbivorous dinosaurs in North America.eliminateThe jawbone fossil constitutes the first evidence found by scientists that small herbivorous dinosaurs existed in North Texas and gives a clearer picture of the Mesozoic Era in North America.

Read this passage:Proof Found in Australia Links Humans to DinosaursThe Australian Society for the Study of Subcutaneous Cultures (ASSSC) today released information about the discovery of a previously unknown species of human that could provide more insight to when humans first walked the earth. A complete skeleton found on the Coast Plains, near Melbourne, has anthropologists excited about the possibility of adding another link to the chain of human history. Scientist Peter L. Reilly describes the find: "This mammal, which we have named Homo jurassicus parkus, appears to share several similarities with both modern humans and Jurassic-era dinosaurs. The skull shape, for instance, measures only 1/15th of a centimeter larger than the common Homo sapiens skull, and the metatarsal bones of the feet share a distinctive pattern with those identified from fossils belonging to Compsognathus, a genus of small, bipedal, carnivorous dinosaurs that are believed to have lived over 150 million years ago." Researchers have been flocking to the Canady site in hopes of finding more proof that dinosaurs and humans share a deeper connection than previously thought.What makes the passage sound believable?A.It uses scientific-sounding data.B.It is written in short sentences.C.It includes an extended title.D.It refers to a real country.SUBMITarrow_backPREVIOUS

Which statement from the article best supports the idea that the Raptorex may not be an ancestor of the T. rex?A.Sereno believes that the Raptorex was a predator.B.…Drawings of what the Raptorex might have looked like show that there were differences between its appearance and that of the massive T. rex.C.It may have run down prey with its strong legs, killed with its powerful jaws, and clutched its victims with its two-fingered "hands."D.The newly found fossil looks a lot like T. rex fossils.SUBMITExtras

Proof Found in Australia Links Humans to DinosaursThe Australian Society for the Study of Subcutaneous Cultures (ASSSC) today released information about the discovery of a previously unknown species of human that could provide more insight to when humans first walked the earth. A complete skeleton found on the Coast Plains, near Melbourne, has anthropologists excited about the possibility of adding another link to the chain of human history. Scientist Peter L. Reilly describes the find: "This mammal, which we have named Homo jurassicus parkus, appears to share several similarities with both modern humans and Jurassic-era dinosaurs. The skull shape, for instance, measures only 1/15th of a centimeter larger than the common Homo sapiens skull, and the metatarsal bones of the feet share a distinctive pattern with those identified from fossils belonging to Compsognathus, a genus of small, bipedal, carnivorous dinosaurs that are believed to have lived over 150 million years ago." Researchers have been flocking to the Canady site in hopes of finding more proof that dinosaurs and humans share a deeper connection than previously thought.Why might people accept this article as fact?A.It refers to the names of real people and places.B.It quotes a scientist who seems to know a lot about the topic.C.It includes information that people find interesting.D.It uses short sentences that give a lot of information.SUBMITarrow_backPREVIOUS

Proof Found in Australia Links Humans to DinosaursThe Australian Society for the Study of Subcutaneous Cultures (ASSSC) today released information about the discovery of a previously unknown species of human that could provide more insight to when humans first walked the earth. A complete skeleton found on the Coast Plains, near Melbourne, has anthropologists excited about the possibility of adding another link to the chain of human history. Scientist Peter L. Reilly describes the find: "This mammal, which we have named Homo jurassicus parkus, appears to share several similarities with both modern humans and Jurassic-era dinosaurs. The skull shape, for instance, measures only 1/15th of a centimeter larger than the common Homo sapiens skull, and the metatarsal bones of the feet share a distinctive pattern with those identified from fossils belonging to Compsognathus, a genus of small, bipedal, carnivorous dinosaurs that are believed to have lived over 150 million years ago." Researchers have been flocking to the Canady site in hopes of finding more proof that dinosaurs and humans share a deeper connection than previously thought.What makes the passage sound believable?A.It refers to a real country.B.It includes an extended title.C.It uses scientific-sounding data.D.It is written in short sentences.