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Topic: Ichthyosaur


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  Ichthyosaur- Enchanted Learning Software
Ichthyosaurs lived in the oceans, probably near the surface (they had large eyes, which would be unnecessary is they spent a lot of time diving into the dark depths of the oceans.
Ichthyosaurs were viviparous; they gave birth in the water to live young (instead of laying eggs, as other reptiles do).
Ichthyosaurs were fast and strong swimmers; they stabilized themselves in the water with their four, strong, crescent-shaped fins.
www.enchantedlearning.com /subjects/dinosaurs/dinos/Ichthyosaur.shtml   (775 words)

  
 Introduction to the Ichthyosauria
While dinosaurs ruled the land, the ichthyosaurs, classified variously in the Ichthyosauria or in the Ichthyopterygia, shared the seas of the world with the other great groups of large marine reptiles, the plesiosaurs and mosasaurs.
The shape of these ichthyosaurs is like that of living tunas and mackerels, which are the fastest fish in the ocean; like them, the later ichthyosaurs were built for speed.
Because ichthyosaurs were so specialized and modified for life in the ocean, we don't really know which group of vertebrates were their closest relatives.
www.ucmp.berkeley.edu /diapsids/ichthyosauria.html   (456 words)

  
 Kamikaze ichthyosaur?
When we abandon the preconceived belief in long ages, we are free to understand the evidence in a straightforward manner.
The layers were laid down, and the ichthyosaur buried, as a result of rapid, catastrophic happenings.
An ichthyosaur is an extinct marine reptile that gave birth to live young.
www.answersingenesis.org /creation/v27/i4/ichthyosaur.asp   (827 words)

  
 Scientific American: Feature Article: Rulers of the Jurassic Seas: December 2000
Given the configurations of the skull and limbs, my colleagues and I think that ichthyosaurs branched off from the rest of the diapsids near the separation of two major groups of living reptiles, lepidosaurs (such as snakes and lizards) and archosaurs (such as crocodiles and birds).
Most important, the bones of fish-shaped ichthyosaurs are closely packed--without skin in between--to form a solid panel.Having all the toes enclosed in a single envelope of soft tissues would have enhanced the rigidity of the flippers, as it does in living whales, dolphins, seals and sea turtles.
Many characteristics of ichthyosaurs--including the shape of their bodies and backbones, the size of their eyes, their aerobic capacity, and their habitat and diet--seem to have changed in a connected way during their evolution, although it is not possible to judge what is the cause and what is the effect.
www.karencarr.com /News/motani/1200motani.html   (3180 words)

  
 Nevada Division of State Parks - Berlin Ichthyosaur State Park
Ichthyosaurs (ICK-thee-o-soars) were prehistoric marine reptiles ranging in size from about two to over seventy feet in length.
Ichthyosaur was the most highly specialized reptile for life in the ocean.
Of all the Ichthyosaurs discovered, the ichthyosaurs at Berlin-Ichthyosaur State Park (dubbed Shonisaurus popularis after the Shoshone mountain range in which they occur), are among the largest specimens known reaching fifty feet in length.
parks.nv.gov /bi.htm   (1365 words)

  
 Ichthyosaur fossil given to the Museum - Natural History Museum
The ichthyosaurs lived in the world's oceans at the same time as the dinosaurs, from 200-90 million years ago.
But unlike dolphins, ichthyosaurs were reptiles that swam using side to side movements of the tail, like fish.
The ichthyosaur remains belonged to an adult about six to seven metres long with a skull that would have been over one metre in length.
www.nhm.ac.uk /about-us/news/2005/august/news_6007.html   (312 words)

  
 [No title]
Ichthyosaurs may have had bodies that were stiffer than one would infer from their fossilized remains, thus avoiding Carrier's Constraint.
In this scenario, even advanced ichthyosaurs were ambush predators, with the "high-speed" adaptations of the body shape and the tail giving fast acceleration and maneuverability but not prolonged stamina: they would have been the cheetahs of the Mesozoic oceans.
The concept that at least some ichthyosaurs had superb sustained performance has been ingrained in the image of the creatures for close to 200 years, and it is difficult to let the idea go altogether.
www-geology.ucdavis.edu /~cowen/ichthyosaur.html   (5484 words)

  
 The Rolex Awards: studying the Ichthyosaur, a giant prehistoric animal, E. Nicholls
Over 21 metres long, this ichthyosaur, which looks like a dolphin with a slender, elongated snout, is the biggest prehistoric marine reptile found to date.
Elizabeth Nicholls, who was a palaeontologist at the Royal Tyrrell Museum in Alberta, Canada, was named a Rolex Laureate in 2000 for her project to extract the enormous fossil from the limestone bed where it had been hidden for over 220 million years.
This ichthyosaur fossil is similar in shape and age but not in size to the one being excavated by Nicholls.
www.rolexawards.com /laureates/laureate-42-nicholls.html   (797 words)

  
 The Most Northern Pregnant Ichthyosaur - The fossils stayed forgotten for 25 years under a ping pong table! - Softpedia
Recently, scientists at the University of Alberta studied a pregnant female ichthyosaur fossil with the smallest known embryos inside, which is the most recent record of a live birth.
Ichthyosaurs (= fish lizard in ancient Greek) lost their limbs with the evolution.
During the pregnancy, most female ichthyosaurs are completely toothless, giving up the calcium for their own teeth and bones to their developing embryo.
news.softpedia.com /news/The-Most-Northern-Pregnant-Ichthyosaur-36410.shtml   (508 words)

  
 New Exhibit at Berlin-Ichthyosaur State Park
The Nevada Bureau of Mines and Geology contributed chemical analyses of a fossilized ichthyosaur rib bone to a team investigation of this fossil, which resulted in a new educational exhibit at Berlin- Ichthyosaur State Park.
As many readers may know, ichthyosaurs were large sea-going reptiles which roamed the oceans about 225 million years ago (age of the species found at this park).
Few people know that, although numerous ichthyosaur localities are known around the world, this park contains one of the only partial excavations where the bones have been left in the rock in their original configuration.
www.nbmg.unr.edu /dox/nl/nl21a.htm   (453 words)

  
 Shonisaurus
One theory holds that they represent a school of ichthyosaurs that were beached and died together like a group of stranded whales.
Now in the middle of a dry, sage brush covered desert, it is hard to imagine that 200 million years ago an ocean covered these rocks, or that hundreds of thousands of dollars worth of gold and silver were mined next to the fossils of these giant marine predators.
The recent recovery of the remains of a 23 meter-long ichthyosaur in Canada has dramatically shown that even larger marine reptiles have existed but does not take away from the paleontological importance of these large, late Triassic ichthyosaurs.
www.oceansofkansas.com /ichthyosaur.html   (1177 words)

  
 expeditions
Ichthyosaurs were reptiles perfectly designed for a life of hunting fish, squids and
A remarkable large orbit and sclerotic ring suggest Ichthyosaurs had very large eyes to assist in hunting but it is not evidence of any ability to echo-locate as in whales.
We were delighted to find a missing jaw fragment from Ichthyosaur 960901 - excavated in 1996 and found fragments from a number of other ichthyosaurs and plesiosaurs which we left in situ for future teams as we were unable to trace them to source on this occasion.
earthsci.org /expeditions/exped.html   (2067 words)

  
 Australia's Lost Kingdoms - Australian Ichthyosaur
Description: The Australian Ichthyosaur was a large, dolphin-shaped reptile that lived in the Eromanga Sea - an inland sea that covered vast areas of inland Australia 110 million years ago.
A fast swimmer, the Australian Ichthyosaur propelled itself with sideways sweeps of its tail, using its fins to steer.
Fossils: Fossils of the Australian Ichthyosaur have been found in Queensland, South Australia and the Northern Territory.
www.lostkingdoms.com /facts/factsheet2.htm   (114 words)

  
 Jurassic ichthyosaur fossil excavation at Charmouth beach - Natural History Museum
Paul Davis says, ‘I was walking along the shoreline away from the rest of the group when I spotted a row of vertebra on the flat rock ledges and I immediately recognised it as part of the backbone of the ichthyosaur.
I was amazed to see it there, as I knew that only one other ichthyosaur fossil had ever been found in this rock layer.
Fossil ichthyosaurs 220-195 million years old are commonly found, particularly along the Jurassic Coast (the Dorset and East Devon Coast UNESCO World Heritage Site) and several ichthyosaurs that are around 185 million years old have been found on the North Yorkshire coast.
www.nhm.ac.uk /about-us/news/2004/nov/news_3834.html   (336 words)

  
 Giant ichthyosaur fossil found on the dinosaur coast.
At the tender age of 10 years, she and her brother Joseph found the first recorded ichthyosaur fossil, her 18ft specimen became world famous.
Mary Anning learned how to collect ichthyosaur fossils from her father.
Tony Gill found his ichthyosaur (photograph at top of this page) during the Easter of 2000, after several day of heavy rain caused a slip on the coastline at Charmouth.
www.lymeregis.com /ichthyosaur_find/index.htm   (439 words)

  
 Berlin-Ichthyosaur State Park Ham Radio Trips
- The Ichthyosaur Paleontologic State Monument, as it was known then, was first scouted by Jay, W6GO, and me for the Radio Amateur Mobile Society (RAMS) in February, 1964.
Ichthyosaur was declared the Nevada State Fossil in 1977 since skeletons in this park are the only complete ones in the world.
The name was changed to Berlin-Ichthyosaur State Park when the mining town of Berlin, including the mill, was taken into the Park.
home.pacbell.net /lcobb/ichsaur.htm   (449 words)

  
 FOXNews.com - Ichthyosaur Fossils Found Under Campus Ping-Pong Table - Science News | Science & Technology | ...
The ichthyosaur fossils, six or seven individuals in total, were unearthed from the Loon River Formation in Canada's Northwest Territories 25 years ago, then languished under the ping-pong table in the undergraduate science lab on the Edmonton campus until they were rediscovered by newly hired faculty member Michael Caldwell.
The fossils provided a look at ichthyosaurs at just the time that they "blink out of the fossil record," Caldwell said.
For example, Caldwell knew that the female fossil had no teeth because all of her body's calcium was rerouted to the embryos' developing skeletons.
www.foxnews.com /story/0,2933,215615,00.html   (752 words)

  
 Marine Reptiles: Ichthyosaur: Ichthyosaurus
They lived from the Early Triassic through to the Late Cretaceous.
Ichthyosaurs were between 7 and 30ft long, were carnivorous and may have given birth to live young.
Fossil remains have been found in North and South America and Europe.
www.nhm.org /journey/prehist/marine/ichthyosaurus.html   (177 words)

  
 Dinosaur tracks, jurassic fossils, ichthyosaur replicas, archaeopteryx skeleton.
Dinosaur tracks, jurassic fossils, ichthyosaur replicas, archaeopteryx skeleton.
Some are one of a kind and can only be viewed at museums.
See the customers and testimonials links for more locations where you can find our replications.
www.baystatereplicas.com /m/fossils4.html   (113 words)

  
 Definition of ichthyosaur - Merriam-Webster Online Dictionary
Learn more about "ichthyosaur" and related topics at Britannica.com
Find more about "ichthyosaur" instantly with Live Search
See a map of "ichthyosaur" in the Visual Thesaurus
www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=ichthyosaur   (63 words)

  
 Marine Reptiles: Ichthyosaur: Mixosaurus
Mixosaurus was an Early Triassic ichthyosaur which lived before the other ichthyosaurs like Ichthyosaurus and Ophthalmosaurus.
Although similar in shape it was slimmer and smaller at about 3ft.
Please send your comments and questions about the content of this page to educate@nhm.org.
www.nhm.org /journey/prehist/marine/mixosaurus.html   (161 words)

  
 Ichthyosaur Page Home
How big were they, and how much did they weigh?
Why diving behavior is likely for some ichthyosaurs.
List of valid taxa down to the generic level.
www.ucmp.berkeley.edu /people/motani/ichthyo   (35 words)

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