Sentences with phrase «of ancient fish»

Latest findings support the theory that teeth in the animal kingdom evolved from the jagged scales of ancient fish, the remnants of which can be seen today embedded in the skin of sharks and skate.

No longer is this extremely rare order of ancient fish crowned the slowest evolving vertebrate animal in the world.

Well - preserved fossils of an ancient fish called Psaroepis romeri reveal that this 20 - centimeter - long minipredator, which prowled the seas between 410 million and 415 million years ago, had enamel in its scales and its skull — but not its teeth, according to a paper by Ahlberg and colleagues in the 24 September issue of Nature.

But the scales and skull bones of this ancient fish included some enamel.

But new analyses of fish fossils, as well as genetic analyses of a living fish species, suggest that this specialized material once served a very different function: to toughen some bones and scales of ancient fish.

Not exact matches

It turns out that these long - lived fishes, who are our ancient evolutionary cousins, share the core of an adaptive immune system with human beings.

It used to be thought that ancient Greek zoologists had estimated the number of types of fish to be 153, 50 that the number was said to symbolize a perfect and a complete catch.

It is thus one of the supremely important books, not only of the Old Testament but of all ancient literature, and its common caricature, as the narrative of a fish literally swallowing a man and disgorging him alive after three days, is one of the most regrettable absurdities in the Western world's long mistreatment of the Bible.

One of the white fish I have started experimenting with recently are tilapia species, going back to the pharaos of ancient Egypt.

Inspired by an ancient Celtic myth, the «Hawk of Achill» spot is set in a small fishing village on Achill, a rugged island — steeped in folklore and myth — off the coast of Ireland.

In Byrd's honor a decal with his number 90 overlaying an ichthus, the outline of a fish that is an ancient symbol of Christianity, was affixed to every Jet helmet.

An ancient technique of commercial fishing has proved so efficient that sportsmen...

Kent is passionate about ancient sharks and rays, but he could not do that work because UMD's Department of Entomology, where he had his post, did not have a position for cartilaginous fish paleontology.

Long uses the discovery to shed light on what amorous ancient fish might have done in the dark (and with what appendages) and then embarks on a wide - ranging discussion of the evolution of sex.

Often called living fossils, these eel - like misfits have lungs and fleshy pectoral fins, bony plates and thick scales reminiscent of ancient fossil fish, and flag - like fins along their back that are unique.

ANCIENT flying fish could make waves in our picture of prehistoric oceans.

Iain McKechnie and Dana Lepofsky examine ancient herring fish bones that tell a fascinating story about how gigantic herring fisheries were for thousands of years in the Pacific Northwest.

Now paleontologist Neil Shubin — discoverer of the «fishapod» Tiktaalik, whose fins with wrists and elbows illustrate an evolutionary transition between ancient fish and early land animals — leads a lively jaunt through the human body to get us in touch with our fishy (not to mention buggy, wormy, and yeasty) extended family.

«It's difficult to capture ancient fishing because of the nature of fish bones — they're small, fragile bones,» says Carrin Halffman, a biological anthropologist at the University of Alaska (UA), Fairbanks, and the lead author of the new study.

Ghosted flesh Herringlike Lycoptera and other ancient fish were discovered in Liaoning by Japanese scientists during the occupation of northern China.

The Sahara, which covers nearly a third of Africa, was once a lush savanna, teeming with wildlife, fish - filled lakes, and ancient humans.

Lungfish are members of an ancient group of lobe - finned fishes (Class Dipnoi), having a continuous fossil record originating in the Devonian period around 400 million years ago.

This illustration in a fish with a proven ancient lineage of a highly evolved system controlling variations in heart rate suggests that its evolution was necessarily linked to the advent of air breathing over primitive vertebrate lungs rather than the much later appearance of mammals.

A series of excavations by Jim Bowler, Alan Thorne, and others in the continental interior revealed that ancient humans had fished and collected freshwater mussels along the shores of the Willandra Lakes 50,000 years ago, possibly earlier.

Scientists have resurrected an ancient gene that can jump between chromosomes in the cells of zebra fish, salmon, and humans.

Long has used Tadros to study the evolution of backbones, testing the idea that by making ancient fish stiffer, backbones made them faster and hence better at collecting food or evading predators.

The researchers analyzed a skull of Panderichthys — an ancient fish that evolved at about the same time as tetrapods (early four - legged land - dwellers) from a common ancestor.

Bichir fish (Polypterus), which are native to Africa's Nile basin, are the closest living counterparts of those ancient stem tetrapods.

Per Ahlberg of Uppsala University in Sweden and colleagues found the fossil fish in the Gogo formation in western Australia, where an ancient reef community has been exquisitely preserved.

«We were stunned to find that our ancient fossil fishes had abs,» says co-author Kate Trinajstic of Curtin University in Perth, Australia.

According to the ancient Chinese text Zhouli (Rites of Zhou), jiang was made by mixing meat or fish with salt and liang qu (a fermentation starter) and leaving the mixture to mature for 100 days.

At once profoundly dignified, as birds of such ancient lineage should be, they are at the same time masters of deadpan clowning, particularly when two or three birds contend for the same fish.

Moreover, their findings suggest that ancient fishes had multiple layers of external armor that evolved into the differing scale types we see today.

Read previous Zoologger columns: Ancient air - breathing, triple - jawed fish, Horror fly returns from the dead, Even parasitic worms have a divided society, Shrimp plays chicken with its sex change, Death by world's longest animal, Live birth, evolving before our eyes, Sympathy for the piranha, The world's most fecund vertebrate, Whale - eater's helpful sulphur - powered guests, Horror lizard squirts tears of blood.

Nearly 15 years ago, two fishers in the waters off the southern coast of Sri Lanka hauled up a stone slab etched with ancient Hindu symbols.

Taken together, the cultural evidence strongly suggested that ancient Peruvian fishers had camped on the ridges, possibly year - round, eating shellfish meat and tossing away millions of shells.

We have known about this human and animal pathogen, TB, since ancient times, and it has always been considered something that is transmitted either through oral or aerosol exposure,» said lead study author Kathleen Alexander, DVM, PhD, professor, Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, Virginia.

Chromatophores produce the colors of all kinds of vertebrates other than reptiles, including fish and amphibians — so the new technique could open a door into seeing the full colors of a wide variety of ancient creatures.

An ancient flying reptile may have had a feeding style akin to that of modern birds known as skimmers, which occasionally swoop along the water's surface to snatch fish swimming there, a new study suggests.

The twin tails of some prized goldfish varieties didn't arise naturally: Ancient Chinese fish aficionados deliberately bred for this trait.

«Similarities found between how ancient and modern fish survived youth: Belgian site is first evidence of shared armored fish «nursery».»

An ancient fish that sported a saw blade - like whorl of serrated teeth — and was long presumed to be a member of the shark family — actually belonged to a different but closely related group, a new study suggests.

Surprisingly, the team also found 66 genes analogous to ones regulated by beneficial bacteria in the mouse intestine — suggesting that some host - bacterial interactions derive from an ancient ancestor of both mice and fish.

«The scales of most fish that live today are very different from the ancient scales of early vertebrates,» says study author Dr Andrew Gillis from Cambridge's Department of Zoology and the Marine Biological Laboratory in Woods Hole.

In biology, one long - running debate has teeth: whether ancient fish scales moved into the mouth with the origin of jaws, or if the tooth had its own evolutionary inception.

However, while most fish in the sea have bones, one ancient lineage — sharks, skates and rays — possess skeletons made entirely of cartilage.

FISHING boats in the North Sea bring up some strange things in their nets, from the bones of mammoths to ancient stone tools and weapons.

He re-told the familiar tale of the evolution of land animals from ancient fish, and then considered the return of various groups of reptiles, birds and mammals to an aquatic existence: ichthyosaurs and plesiosaurs, crocodiles, sea - snakes, penguins, whales, dolphins and porpoises, manatees and dugongs, and seals — as well as polar bears, otters and water voles, who hunt in water.

Looking like a cross between a fish and a dolphin, ichthyosaurs thrived throughout the reign of the dinosaurs, and since their remains are regularly dug up across Europe and the UK, they're among the most well - understood ancient creatures.

«There is already evidence from fossilized stomach contents that ancient sharks like Orthacanthus preyed on amphibians and other fish, but this is the first evidence that these sharks also ate the young of their own species.»