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New research reveals why the saber-tooth tiger needed such large teeth.
(Source: DCMP)
In 1964, a paleontologist named John Ostrom unearthed some fascinating fossils from the mudstone of Montana. Its discovery set the stage for what’s known today as the dinosaur renaissance: a total rethinking of what scientists thought they knew about dinosaurs. Part of the "Eons" series.
Horseshoe crabs are "living fossils" more closely related to spiders and scorpions than they are to crabs. They get their name from the smooth, hard shell (exoskeleton) that is shaped like a horseshoe. Part of "The Remarkable Horseshoe Crab" series.
Hagerman Fossil Beds National Monument in Idaho is home to over two hundred different species of fossil plants and animals: including saber tooth cat, mastodon, bear, camel, ground sloth, and many other species. Over 3,000 new fossil fragments are found each year.
In this episode, host Emily Graslie highlights the suckermouth armored catfish, dinosaur fossils, and a group of parasitic ants. Part of the "Natural News From The Field Museum" series.
Paleoanthropologist Dr. Tim White discusses how his team unearthed the fossil of Ardipithecus ramidus, an early hominid that lived about 4.4 million years ago. Dr. White discusses the fossil record and hominid evolution.
Some of the world's best preserved fossils are found in the flat-topped ridges of southwestern Wyoming's cold sagebrush desert. Fossilized fishes, insects, plants, reptiles, birds, and mammals are exceptional for their abundance, variety, and detail of preservation. Most remarkable is the story they tell of ancient life in a sub-tropical landscape.
Discovering a dinosaur is just the first step. Paleontologists Sterling Nesbitt, Mark Norell, and Danny Barta tell the story behind the treasure trove of Triassic fossils from Ghost Ranch, New Mexico. Part of the "Shelf Life" series.
Paleontologists have spent the better part of two decades debating whether Coelophysis ate its own kind. It turns out, the evidence that scientists have had to study in order to answer that question includes some of the strangest and grossest fossils that any expert would ever get to see. Part of the "Eons" series.
Paleontologists today look at more than just fossil evidence to learn about organisms that lived millions of years ago. In this episode, host Emily Graslie seeks to answer the question, "How did mammals develop their specialized movements?" Part of "The Brain Scoop" series.
Updates the five kingdoms classification scheme with the latest understanding of life's organization based on DNA, fossil, and biochemical evidence, reorganizing all life into three great branches: Archaea, Bacteria, and Eucarya. Shows concise animations and superb microscope footage of primitive cells.
Students will explore how the discoveries of specific fossils, the geographic fit of the continents, ocean floor magnetic fields, young ocean rocks, and seafloor spreading provide evidence to support the theory of plate tectonics. Footage from Iceland helps illustrate the power of tectonic movement. Other topics covered include continental drift, Pangaea, tectonic plates, plate boundaries, mountain building, folding, faulting, and landforms.
Paleontologists have studied the fossil record of human evolution just like they have done for other major transitions, including the evolution of tetrapods from fish and the evolution of birds from dinosaurs. Sean Carroll and Tim White discuss the most important human fossils and how they illuminate key phases of human evolution, focusing in particular on three traits: larger brains, tool use, and bipedality.
As shown on the History Channel. It is the tallest and biggest mountain on Earth, as far removed from sea level as it's possible to be--and yet its sedimentary layers contain fossils that were once creatures that lived on the ocean seabed. The Himalayas formed when India smashed into Asia--propelled by plate tectonics. Everest is still rising but its height is limited--extreme erosion counteracts and limits the amount of uplift.
In October 2004, the understanding of the human family tree was turned upside down. Anthropologists reported that they had discovered the bones of a tiny, unknown hominin, on the Indonesian island of Flores. It was named Homo floresiensis, but it's often called "the hobbit" for its short stature and oddly proportioned feet. It’s been at the center of a major controversy in the field ever since. Part of the "Eons" series.
In this behind-the-scenes glimpse into cataloging at The Field Museum, host Emily Graslie learns how to number small skeletal samples in the mammal collection. She also visits the seal fossil collection and examines the differences between the teeth of various species. Part of "The Brain Scoop" series.
When scientists attempt to study prehistoric sharks, they typically only find their teeth. Since the teeth are the only fossil records, they are left to imagine what these creatures looked like. In this episode, host Emily Graslie highlights some of the teeth of prehistoric sharks. Part of "The Brain Scoop" series.
As shown on the History Channel. Africa's Sahara Desert is the size of the United States, making it the largest desert in the world. It's also the hottest place on the planet. But now the series of geological discoveries has revealed this searing wasteland hides a dramatically different past. Scientists have unearthed the fossils of whales, freshwater shells, and even ancient human settlements. All clues to a story that would alter the course of human evolution and culminate in biggest climate change event of the last 10,000 years.
A research team has found that sweat is better than saliva and tears for noninvasive testing because it provides information much the same as blood. The team has developed Band-Aid-like sensors to collect health information from sweat. Other segments include the evidence that temperature determines sex for some animals, new methods for delaying ice and frost, and a historic discovery of 500 million-year-old fossils. Part of the "4 Awesome Discoveries You Probably Didn't Hear About This Week" series.
In this episode, host Emily Gralie features stories on current scientific research. One segment highlights the work of Paleontologist Carmen Soriano. She is studying tiny fractures in dinosaur limbs. Another segment focuses on a community group, and their quest to bring back an extinct plant. The final story explains how two scientists discovered fossils of the beardog. Part of the "Natural News From The Field Museum" series.
