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Zoom Dinosaurs
Current Questions Top 16 Questions Old Questions Ask A Question
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By Date By Type of Dinosaur General Dino. Qns. Qns. About Other Animals Geological Era Qns.

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Questions from Late Jan. 2001
Please check the
Top Sixteen Dinosaur Questions
and the
Dino and Paleontology Dictionary first!

What does the word dinosaur mean?
What does saurus mean?,
What does deinos mean?

What color were the dinosaurs?

How (and when) did the dinosaurs go extinct?
How many dinosaurs were there?
What was the biggest dinosaur? What was the smallest dinosaur? Which dinosaur was the largest meat-eater? Were there more plant-eaters or meat-eaters?
How many teeth did T. rex have (and how big were they)? What is the oldest dinosaur ever found? What was the first dinosaur ever found?
Did birds evolve from the dinosaurs?

Were there any flying dinosaurs?

Were there any swimming dinosaurs?
How do you know what the enemies of a dinosaur were? What kind of habitats did the dinosaurs live in?

I enjoy hearing from visitors. You can send your questions and I'll answer them as soon as possible. Thank you for writing! (Due to the large volume of questions coming in, I can't answer them all. I'll try to answer as many as I can, as soon as I can. Jeananda Col, Washington, USA)

Don't forget to scroll down to find the answer to your question - they're in reverse order by the date they were asked.

Q: Were dinosaurs reptiles? I have read that dinosaurs may have been warm-blooded, and, because of the lack of fossilized eggs, some dinosaurs may have had live births. Both of these characteristics would not allow dinosaurs to be classified as reptiles.
from Lynn D., Houston, Texas, U.S.A.; January 31, 2001

A: Yes, dinosaurs were reptiles; your argument is wrong in many ways. Body temperature regulation is not part of the definition of reptiles (except in very old books and popular culture). For information on reptiles, click here. In addition, many thousands of fossilized dinosaur eggs have been found all around the world. Also, many modern-day reptiles give birth to live young (like some snakes).

Q: How did the dinosaurs reproduce?
from Caramon B., Shelbyville, Indiana, United States of America; January 31, 2001

A: Click here.

Q: How did the dinosaurs eat?
from Caramon B., Shelbyville, Indiana, United States of America; January 31, 2001

A: Click here.

Q: How did the dinosaurs move?
from Caramon B., Shelbyville, Indiana, United States of America; January 31, 2001

A: Click here.

Q: Where can I find info on the dinosaur Anatosaurus?
from Charlye B., Fayette, Al, USA; January 31, 2001

A: Anatosaurus is probably a juvenile example of Edmontosaurus. For information on Edmontosaurus, click here.

Q: Where are the biggest and best dinasour museums in the U.S.?
from Thomas T., Shoreline, Wa, U.S.A.; January 30, 2001

A: For a list of dinosaurs museums in the USA, click here. Some of the best are the Carnegie (Pittsburgh, PA), the National Museum of Natural History - Smithsonian Institution's Dinosaurs (Washington, D.C.), and the American Museum of Natural History (NY, NY).

Q: What was the fastest dinosaur?
from Brendy, Menlo park, CA, USA; January 30, 2001

A: The fastest dinosaurs were probably the long-legged, light-weight, hollow-boned ornithomimids (dinosaurs like Gallimimus and Ornithomimus).

Q: What kind of hips do alamosaurus have????
from Erika, New Braunfels, Texas, ?; January 30, 2001

A: Alamosaurus was a lizard-hipped dinosaur (a saurischian). For more information on Alamosaurus, click here.

Q: I want facts about Komoto Dragon.
from Karen C., concord, ca., u.s.a.; January 30, 2001

A: For more information on Komodo dragons, click here.

Q: What does alamosaurus mean
from Misty M., New Braunfels, Texas, ?; January 30, 2001

A: Alamosaurus means Alamo lizard; it was named for Ojo Alamo (a trading post in New Mexico), where it was found. For more information on Alamosaurus, click here.

Q: what time period did the stegosaurs live in
from z, tempe, AZ, USA; January 30, 2001

A: Stegosaurs were a group (family) of quadrupedal, plant-eating, ornithischian dinosaurs with two rows of armored plates along their backs and tail spikes. They lived from the Mid-Jurassic to the early Cretaceous. Dacentrus, Kentrosaurus and Stegosaurus were stegosaurs

Q: what does the name iguanadonts come frome
from ?, ?, ?, ?; January 30, 2001

A: Iguanodont means "iguana tooth." These dinosaurs were given that name because their teeth resembles those of modern-day iguanas. For information on Iguanodon, click here.

Q: What dinosaurs were unknown and lived during the Triassic Period?
from Alex G, beverly Hills, ?, USA; January 29, 2001

A: If they're unknown, we don't know about them.

Q: My daughter has to make a presentation on Stegosaurus. We've found abundance of interesting information, but there are still two questions she needs to answer, and we haven't been able to find any information that could help her answer them. How many eggs did the stegosaurus laid at one time? How long did it lived? (Life span of a given stegosaurus, not the species) Your answer will be highly appreciated. :-)
from Maria P., Honolulu, Hawaii, USA; January 29, 2001

A: No Stegosaurus eggs have been found, so no one knows how many eggs were laid at one time. I've never seen an estimate of Stegosaurus' life span.

Q: What time did the Diplodocus live
from ?, ?, ?, ?; January 29, 2001

A: Diplodocus lived during the late Jurassic Period, from 155-145 million years ago. For more information on Diplodocus, click here.

Q: what is bigger,t-rex or megalesourus
from mac a, peterbourough, ont, can; January 29, 2001

A: T. rex was bigger than Megalosaurus.

Q: Is the extinction of the dinosaur related to the extinction of the Wooly Mammoth at all?
from Lora D, ?, ?, U.K; January 29, 2001

A: No. The last of the dinosaurs went extinct about 65 million years ago. The woolly mammoth went extinct about 11,000 years ago.

Q: What kind of dinosaurs once lived in Virginia .
from Brittani G., Clifford, Virginia, U.S.; January 29, 2001

A: No dinosaurs have been found in Virginia. For a list of dinosaurs found state by state in the USA, click here.

Q: I read somewhere that 90% or more of birds in the world are already extinct, is this true?
from Amy L, Tallahassee, FL, US; January 29, 2001

A: Yes, most of the bird genera that ever lived went extinct long before humans appeared (this is true for most life forms).

Q: Who discovered the Dinosaur "Barosaurus?"
from Lisa C., N. Haledon, New Jersey, America; January 29, 2001

A: Barosaurus was named by Othniel Marsh in 1980. I don't know who found the fossil - it was probably someone who was working on his fossil-hunting team (these people were rarely given proper credit).

Q: Which was more dangerous an Apatosauraurs or a Tyrannosaurs Rex
from ?, ?, ?, ?; January 29, 2001

A: T. rex

Q: was megladon the biggest prehistoric shark, or was there one even bigger?
from debra k, indianapolis, indiana, united states of america; January 29, 2001

A: Megalodon was probably the largest shark. Since only fossil teeth are found from ancient sharks (they have no bones, only cartilage, which does not fossilize well).

Q: name two extinct species of animals
from jsoh k, DePue, ILL, united states; January 29, 2001

A: Tyrannosaurus rex and Triceratops horridus.

Q: What are some interesting facts about the Stegasaures
from Ramon Sodano, Chimacum, Washington, USA; January 28, 2001

A: For a page on Stegosaurus, click here.

Q: I'm doing a report on the Pachycephalosaurus and I can't find the answers to these questions anywhere! CAn you please help. How many eggs were layed at one time? How did they make nests? How did it protect its eggs and babies? How long was its lifespan? I am in the second grade and could really use your help! Mahalo.
from Katherine M., Waianae, HI, USA; January 28, 2001

A: No Pachycephalosaurus nests or eggs have been found so it isn't known how many eggs were laid (or if they were laid in a nest or if there was any parental care). I've never seen any estimates for the life span of Pachycephalosaurus.

Q: Two questions: 1. Did Parasaurolophus live in Alaska? 2. Why are pachycephalosaurs and ceratopsians classified so closely together?
from russell p, seattle, wa, usa; January 28, 2001

A: Parasaurolophus has been foundin Alberta, Canada and Montana and New Mexico, USA (and perhaps Utah). I haven't heard of any found in Alaska.

Pachycephalosaurs and ceratopsians (the clade Marginocephalia, Sereno, 1986) are classified closely together because these two ornithischians share a lot of skeletal characteristics, including a a distinctive skull structure (a slight shelf or bony frill on the back of the skull), a unique palate (part of the mouth) and a short pubis (part of the hip).

Q: How long did a Trachodon dinosaurs live?
from Andrew, Baldwinsville, NY, USA; January 28, 2001

A: Trachodon is only known from a few teeth - its life span isn't known.

Q: what type of environment did dinosaues live in when they first appeard on earth?
from deborah d, amherst, ny, u.s.a.; January 28, 2001

A: The dinosaurs evolved during the Triassic period. During this time, the weather was warmer, the sea levels were higher (because there was no polar ice), the Earth's continents were jammed into one supercontinent called Pangaea, and much of the land of Earth was inland and desert-like.

Q: Where are Komoto Dragons from?
from Renee T, Novi, MI, USA; January 28, 2001

A: Oddly enough, Komodo dragons live on the island of Komodo and on nearby islands (in Indonesia). For more information on Komodo dragons, click here.

Q: Do you have any informaitin on a xiasouras. A jurissic dinosure??
from Amanda W, thousand palms, california, Untied States of America; January 28, 2001

A: For information on Xiaosaurus, click here.

Q: Do brontosaurus spit poison?
from Skyla B., Troy, N.H., USA; January 28, 2001

A: No.

Q: How do you justify saying that dinosaurs are closer to reptiles than birds? Reptiles includes dinosaurs, and dinosaurs includes birds. The concept of equal classes of animals is dead.
from Brad, Woodville, ON, Canada; January 27, 2001

A: I didn't say they were closer to reptiles, I said they WERE reptiles - and if you redefine reptiles to be a clade (changing the traditional definition of reptile that 99 percent of all people accept), the clade of reptiles of course includes the birds. I've added a rejoiner to the short answer I gave.

Q: Were there any omnivore dinosaurs, or just carnivroes and herbivores?
from ?, ?, ?, ?; January 27, 2001

A: Yes, some dinosaurs, like Ornithomimus and Oviraptor, were onmivores (eating both plants and animals). For more information on dinosaur diets, click here.

Q: What animals other than T. Rex lived in the cretacious period. (I don't think I spelled cretacious right.)
from Someone, Pheonix, Arizona, Antarctica; January 27, 2001

A: During the Cretaceous period, there were a lot of other animals, including other reptiles (like pterosaurs, ichthyosaurs, and mosasaurs), early mammals, many invertebrates (including insects, arachnids, worms, sponges, trilobites, ammonites, corals, etc.), fish (including sharks), and many more.

Q: what does the MEGLADON look like
from milo b, windsor, onterio, canada; January 26, 2001

A: Megalodon probably looked a lot like the Great White Shark, but was much bigger and perhaps more streamlined. For information on Megalodon, click here.

Q: How many dinosaurs were plant eaters and how many were meat eaters?
from 2B Our Lady of Fatima School,, Secane, PA, USA; January 26, 2001

A: Most were plant eaters. For a list of all the known dinosaur genera, click here - the plant-eaters are in green and the meat-eaters are in red.

Q: Are dinosaurs more closely related to the reptile, amphibian, mammal, or bird?
from Karen L., Philadelphia, Pennsylvania, United States; January 26, 2001

A: Dinosaurs were reptiles (reptiles as a clade includes the birds, also).

Q: Does this website have pictures of dinosaurs that you can print
from davis m., austin, tx, usa; January 26, 2001

A: Yes, for a page of dinosaur printouts, click here.

Q: Could you please tell me all the dinosaurs found in Australia
from Joey, Tuncurry, NSW, Australia; January 25, 2001

A: For a page on Australian dinosaurs, click here.

Q: I am trying to find out what a lesthosaurus is or means.
from Tyler K, Ronkonkoma, New York, U.S.A.; January 25, 2001

A: Lesthosaurus was a very early dinosaur - it lived during the Triassic period. For more information on Lesothosaurus, click here.

Q: My son, who is in 2nd grade, has to do a report on a dinosaur. He has chosen the Spinosaurus. I printed you information sheet, but we also need information about how they cared for their babies, how they fought, how they captured their food and things like that. Can you help?
from Alice S, Etters, PA, USA; January 25, 2001

A: For most dinosaurs, including Spinosaurus, that information is not known. Only a few, incomplete Spinosaurus fossils have been found, and that tells you nothing about how (or if) they cared for their young. As to how they fought and caught their food, it's a matter of conjecture. They probably used their sharp teeth and clawed arms (and/or legs).

Q: Where can I find information on brachiasauruses, ankylasauruses, and pleisosauruses?
from Jacqui L, Boston, MA, USA; January 25, 2001

A: For Brachiosaurus, click here. For Ankylosaurus, click here. For Plesioosaurus, click here.

Q: Do Dinosaurs have five fingers like people?
from Ryanne S., Kennesaw, Georgia, usa; January 25, 2001

A: Different dinosaurs had different number of digits on their hands (or front legs). The number of digits varied from two to five. For example, T. rex had two functional fingers on each hand, Allosaurus and Coelophysis had three fingers on each hand, Ceratosaurus had four fingers on each hand, and Ankylosaurus had five fingers on each hand.

Q: 1.How can I know what kind of dinosaurs eating meat or plant? 2.when dinosaurs lived? and where? what kind of weather? dinosaurs disapeared? or why?disapeared? and any bug or any animals? 4.all dinosaurs are big?
from so-young.han, st.anthony, MN, U.S.A; January 25, 2001

A: 1. Most were plant eaters. For a list of all the known dinosaur genera, click here - the plant-eaters are in green and the meat-eaters are in red.

2. Dinosaurs lived during the Mesozoic Era from about 230 million years ago until 65 million years ago. The weather varies then, but was generally warmer than it is now.

3. See the frequently-asked questions listed above.

4. No, not all the dinosaurs were big. Some were the size of chickens (like Compsognathus) or even smaller.

Q: how much of the piantnitzkysaurus whas found ?
from kayla l., saratoga, mew york, usa; January 24, 2001

A: Piatnitzkysaurus (a meat-eating dinosaur) is known from 2 fragmentary skeletons.

Q: My 7 yr old daughter has a small essay to do in Grade 2. Please help her with these 2 questions: Where did the Megalosaurus live? What were his enemies?
from Chelsey C, Sudbury, Ontario, Canada; January 24, 2001

A: Megalosaurus fossils have been found in England. This huge meat-eater probably had no enemies (as a healthy adult). For more information on Megalosaurus, click here\.

Q: What is a paleontologist?
from ?, ?, ?, ?; January 24, 2001

A: A paleontologist is a scientist who studies paleontology, learning about the forms of life that existed in former geologic periods, chiefly by studying fossils.

Q: are there more herbivores or carnivores
from Ben Kashdan, Kingsport, Tennessee, USA; January 24, 2001

A: There were many more herbivores (plant-eaters). For a page on why this is so, and dinosaur diets in general, click here.

Q: where can we find something on t-rex eveloution
from kl, hkl, hjlk, hjkl; January 24, 2001

A: For a page on T. rex's evolution, click here.

Q: how are fossils made
from devin E, wallingford, ct, usa; January 24, 2001

A: For a page on how fossils form, click here.

Q: What species of dinosaurs lived in Utah?
from Dillon B., Hyrum, Ut, USA; January 23, 2001

A: Many dinosaurs have been found in Utah, including: Alamosaurus, Allosaurus, Amblydactylus, Apatosaurus, Barosaurus, Camarasaurus, Camptosaurus, Cedarosaurus, Coelophysis, Diplodocus, Dryosaurus, Dystrophaeus, Iguanodon, Iliosuchus, Marshosaurus, Nanosaurus, Nedcolbertia, Ornitholestes, Ornithomimus, Othnielia, Parasaurolophus, Rioarribasaurus, Stegosaurus, Stokesosaurus, Tenontosaurus, Torosaurus, Utahraptor.

For a list of dinosaurs found state by state in the USA, click here.

Q: When did dinosaurs live?
from Daisy M, Fontana, Ca, USA; January 23, 2001

A: The dinosaurs lived during the Mesozoic Era

Q: Why did dinosaurs and wooly mammoths become extinct pls.
from sarah z, the world, the world, the world; January 23, 2001

A: Because they couldn't adapt to changes (like changes in the climate, new competition from other animals, etc.).

Q: how tall was giganotosaurus from its feet and up?
from ap, sunrise, florida, usa; January 23, 2001

A: Giganotosaurus stood 12 feet tall (from the ground to the hips). THe height to the head depends on the animal's posture. For more information on Giganotosaurus, click here.

Q: Were there ever any dinasour bones found in Nebraska?
from ?, ?, ?, ?; January 23, 2001

A: No. For a list of dinosaurs found state by state in the USA, click here.

Q: I have been searching for the dinosaur the BARBOUROFELIS I CANT FIND ANY INFO ON THIS DINO CAN U PLEASE HELP
from colin k, valpariso, indiana, united states; January 23, 2001

A: Barbourofelis was a mammal (an early cat), not a dinosaur. For information on Barbourofelis, click here.

from M.I., HAMPTON, VIRGINIA, NORTH AMERICA; January 23, 2001

A: No dinosaurs have been found in Viriginia. For a list of dinosaurs found state by state in the USA, click here.

Q: I am a teacher, and one of my students asked me about controversial brontosaurus fossils that have been found. He suggested that they may have been put together to be a brontosaurus, but really were bones of other dinosaurs or other animals altogether. I told him I would check into it. Thank You!!
from Jaime C, Midwest City,, OK, USA; January 23, 2001

A: Yes, the original Brontosuarus (now called Apatosaurus) had the wrong head put on it. The original Brontosaurus fossil, found in 1879, lacked a skull (as many fossils do). Othniel Marsh added a skull found miles away (this skull did not belong to the Brontosaurus, but to a Camarasaurus). In 1900, Henry Osborn assembled another skull-less Brontosaurus at the American Museum of Natural History in New York City, adding a cast of Marsh's skull. In 1915, Earl Douglass of the Carnegie Museum found a Brontosaurus fossil that included the skull, but because of Osborn's influence, the Carnegie displayed the fossil skull-less. When Douglas died in 1932, the incorrect skull was put on display! It wasn't until 1975 that the proper skull was mounted on Brontosaurus/Apatosaurus fossils in museums.

For more information on Apatosaurus, click here.

Q: How do fossils show that the earth's surface has changed? (over the years)
from Danielle D., Purchase, New York, United States; January 23, 2001

A: In many, many ways. One of the most obvious is when you find fossil marine fish on an inland mountain top. This indicates that the area was once under a sea oe ocean, and that the surrounding land has changed enormously over time.

from jaden g, boynton, fla, usa; January 23, 2001

A: Many dinosaurs (like Triceratops and Ceratosaurus) had horns made of bone. They may have also had layers of horn on top of the bone, but horn (made from a protein called keratin) does not fossilize well.

Q: What is the largest toothed animal on the earth today?
from pam C, Wenonah, Nj, USA; January 23, 2001

A: The largest land animal that has teeth teeth is the elephant. The largest animal in the water with teeth is the sperm whale.

Q: How much did Tracodon weigh?
from ?, ?, ?, ?; January 23, 2001

A: Trachodon is only known from a few fossilized teeth - a reasonable weigh estimate would be impossible. For information on Trachodon, click here.

Q: what is the bigest meat eating dinosaur in the permian period?
from mike m, boonton, nj, america; January 23, 2001

A: The dinosaurs didn't evolve until after the Permian period ended (dinos evolved during the Triassic period, about 230 million years ago).

Q: why were the dinasaurs so big
from dena, phila., pa., us.; January 23, 2001

A: No one knows, but this is one of the most puzzling questions in paleontology.

Q: Which Dinosaurs had sails on they're backs?
from Steve, NA, NY, USA; January 21, 2001

A: Some dinosaurs that had a sail on the back included Spinosaurus, Ouranosaurus and Acrocanthosaurus.

Q: names of plants in the Jurassic
from Dave J., Anchorage, Alaska, U.S.A; January 21, 2001

A: Click here for a page on Jurassic period plants.

Q: What are all the dinasaurs that are in the Jurrasic period? Tell me about the dinosaurs please.
from Farrah Y, Saar, Budaya, Bahrain; January 21, 2001

A: For early Jurassic dinosuars, click here. For middle Jurassic dinosuars, click here.For late Jurassic dinosuars, click here.

Q: where were the dinosaur's habitats?
from Jessica J, buffalo, n.y., u.s.; January 21, 2001

A: Their habitats varied tremendously, and includied desert-like areas, warm forests, cool areas, and others.

Q: what types of dinos lived on the ground?
from Jessica j, buffalo, n.y., u.s.; January 21, 2001

A: All of them.

Q: In my science class, my partner and I are doing the dinosaur project on the Tanystropheus. Could you please give me all the information that you have on this dinosaur! Thanks a bunch!!!
from Justine L., Kent, Washington, USA; January 20, 2001

A: For information on Tanystropheus (a long-necked reptile, not a dinosaur), click here.

Q: Hi! I am in 2nd grade and my class is doing a Dinosaurs project. I need information about a dinosaur called Nodosaurus. How it looked, What it ate, where and when it lived, etc..I will really appreciate your help. Thanks, Christina N.
from Christina N., ?, Florida, United States; January 20, 2001

A: For a page on Nodosaurus, click here.

Q: Is a Pterosaur the same thing as a Pterosaurus?
from Sophie A., Miami, Florida, USA; January 19, 2001

A: The pterosaurs (allso called pterosauria) were an order of flying reptiles that included genera like Pterodactylus, Pteranodon, Quetzalcoatlus, and Dimorphodon. There is no genus called Pterosaurus (but some people mistakenly call the pterosaurs by this name). For information on pterosaurs, click here.

Q: How did the cretaceous period get its name?
from ?, ?, ?, ?; January 19, 2001

A: Creta is the Latin word for chalk. The Cretaceous period is named for chalky rock from southeastern England that was the first Cretaceous period sediment studied.

Q: What are the natural enemies of Supersaurus?
from Hope X, Fremont, CA, USA; January 18, 2001

A: There were probably no predators who would attack a healthy, adult Supersaurus.

Q: Did the Archaeopteryx lay eggs?
from Kyra F, Pleasant Grove, Utah, USA; January 18, 2001

A: Archaeopteryx probably laid eggs, but none have been found yet.

Q: What was the Pangaea?
from ?, ?, ?, ?; January 18, 2001

A: Pangaea is the name given to the supercontinent that existed during the early Mesozoic Era (roughly 200 million years ago). FOr more information on Pangaea, click here.

Q: Did all meat eaters walk on 2 legs and all plant eaters walk on 4 legs?
from marsha l, New London, WI, USA; January 18, 2001

A: All the meat-eating dinosaurs (called theropod) walked on two legs. Some plant-eaters walked on two legs (like Hypsilophodon and Dryosaurus) and some walked on four (like Triceratops, Stegosaurus, Brachiosaurus, and Apatosaurus.

Q: i need help on a question. ankylosaurus's bony __________ protected it from the other dinosaurs???
from Celsie B., erie, ks, north america; January 18, 2001

A: Armor. For more information on Ankylosaurus, click here.

Q: Are the megaladon and the megalasaurus the same animal?
from room 2B of Our Lady of Fatima School, Secane,, PA, USA; January 18, 2001

A: No, they're quite different. Megalodon was a huge, ancient shark. Megalosaurus was the first dinosaur fossil discovered (in England in 1676). It was also the first dinosaur given a scientific name - by William Buckland in 1824.

Q: I need to know as much as I can about the Argentinosauras.
from JustinL, Timmins, Ontario, Canada; January 17, 2001

A: Click here.

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