Definitions for apatosaurus
ap·atosaurus

Princeton's WordNetRate this definition:0.0 / 0 votes

1. apatosaur, apatosaurus, brontosaur, brontosaurus, thunder lizard, Apatosaurus excelsusnoun

   huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic

WiktionaryRate this definition:1.0 / 1 vote

1. apatosaurusnoun

   An apatosaur.

WikipediaRate this definition:0.0 / 0 votes

1. Apatosaurus

   Apatosaurus (; meaning "deceptive lizard") is a genus of herbivorous sauropod dinosaur that lived in North America during the Late Jurassic period. Othniel Charles Marsh described and named the first-known species, A. ajax, in 1877, and a second species, A. louisae, was discovered and named by William H. Holland in 1916. Apatosaurus lived about 152 to 151 million years ago (mya), during the late Kimmeridgian to early Tithonian age, and are now known from fossils in the Morrison Formation of modern-day Colorado, Oklahoma, New Mexico, Wyoming, and Utah in the United States. Apatosaurus had an average length of 21–23 m (69–75 ft), and an average mass of 16.4–22.4 t (16.1–22.0 long tons; 18.1–24.7 short tons). A few specimens indicate a maximum length of 11–30% greater than average and a mass of approximately 33 t (32 long tons; 36 short tons). The cervical vertebrae of Apatosaurus are less elongated and more heavily constructed than those of Diplodocus, a diplodocid like Apatosaurus, and the bones of the leg are much stockier despite being longer, implying that Apatosaurus was a more robust animal. The tail was held above the ground during normal locomotion. Apatosaurus had a single claw on each forelimb and three on each hindlimb. The Apatosaurus skull, long thought to be similar to Camarasaurus, is much more similar to that of Diplodocus. Apatosaurus was a generalized browser that likely held its head elevated. To lighten its vertebrae, Apatosaurus had air sacs that made the bones internally full of holes. Like that of other diplodocids, its tail may have been used as a whip to create loud noises, or, as more recently suggested, as a sensory organ. The skull of Apatosaurus was confused with that of Camarasaurus and Brachiosaurus until 1909, when the holotype of A. louisae was found, and a complete skull just a few meters away from the front of the neck. Henry Fairfield Osborn disagreed with this association, and went on to mount a skeleton of Apatosaurus with a Camarasaurus skull cast. Apatosaurus skeletons were mounted with speculative skull casts until 1970, when McIntosh showed that more robust skulls assigned to Diplodocus were more likely from Apatosaurus. Apatosaurus is a genus in the family Diplodocidae. It is one of the more basal genera, with only Amphicoelias and possibly a new, unnamed genus more primitive. Although the subfamily Apatosaurinae was named in 1929, the group was not used validly until an extensive 2015 study. Only Brontosaurus is also in the subfamily, with the other genera being considered synonyms or reclassified as diplodocines. Brontosaurus has long been considered a junior synonym of Apatosaurus; its type species was reclassified as A. excelsus in 1903. A 2015 study concluded that Brontosaurus is a valid genus of sauropod distinct from Apatosaurus, but not all paleontologists agree with this division. As it existed in North America during the late Jurassic, Apatosaurus would have lived alongside dinosaurs such as Allosaurus, Camarasaurus, Diplodocus, and Stegosaurus.

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1. apatosaurus

   The Apatosaurus is a genus of herbivorous dinosaur species that lived during the Late Jurassic period, about 150-155 million years ago. This dinosaur is characterized by its long neck and tail, massive body and four sturdy legs. It is one of the largest land animals that ever existed, with an average length of 23-26 meters (75-85 feet). The Apatosaurus was initially mistaken for an aquatic animal due to its size, but it is now believed to have lived on land. It was originally known as the Brontosaurus until scientists realized both names referred to the same dinosaur genus.

WikidataRate this definition:0.0 / 0 votes

1. Apatosaurus

   Apatosaurus, also known by the popular but scientifically redundant synonym Brontosaurus, is a genus of sauropod dinosaur that lived from about 154 to 150 million years ago, during the Jurassic Period. It was one of the largest land animals known to have ever existed, with an average length of 23 m and a mass of at least 16 metric tons. Fossils of these animals have been found in Nine Mile Quarry and Bone Cabin Quarry in Wyoming and at sites in Colorado, Oklahoma and Utah, present in stratigraphic zones 2-6. The cervical vertebrae were less elongated and more heavily constructed than those of Diplodocus and the bones of the leg were much stockier, implying a more robust animal. The tail was held above the ground during normal locomotion. Like most sauropods, Apatosaurus had only a single large claw on each forelimb, with the first three toes on the hind limb possessing claws.

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1. • Sauropod

How to pronounce apatosaurus?

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How to say apatosaurus in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of apatosaurus in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of apatosaurus in Pythagorean Numerology is: 8

Examples of apatosaurus in a Sentence

1. Robert Behnken:

   The hardest part was getting us launched, but the most important part is bringing us home [ to our sons ], for Jack and Theo, Tremor the apatosaurus is headed home soon and he'll be with your dads. You'll have to pick which one of us is your favorite.

2. Emanuel Tschopp:

   We found that the differences between the genus Brontosaurus and the genus Apatosaurus are so numerous that they should be kept apart as two different genera.

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=apatosaurus
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Apatosaurus
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Apatosaurus
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=apatosaurus