Articles tagged with Land Bridges
A plume of hot rocks from the Earth's mantle created a conveyor belt for heat to rise, leading to the gradual uplift of the Arabian Peninsula and the creation of a land bridge between Asia and Africa. This event enabled the early ancestors of elephants, giraffes, and humans to roam between the two continents.
Fossil discoveries in northern Panama Canal area suggest that marine species interchange persisted across shallow waters during the final stages of formation of the isthmus. The findings provide new insights into the connectivity between the Pacific and Caribbean marine faunas during this period.
Researchers found two migration events from northern coastal China to the Americas, one during the Last Glacial Maximum and another during the subsequent deglaciation period. The study also uncovered a genetic link between Native Americans and Japanese people, explaining similarities in Paleolithic archeological finds.
Researchers have made an important human discovery by analyzing the genome of a 3,000-year-old individual found in a cave in Southeast Alaska. The study confirms that some modern Alaska Natives still live almost exactly where their ancestors did over 3,000 years ago.
A new study reconstructs sea level history at the Bering Strait, finding it remained flooded until around 35,700 years ago, less than 10,000 years before the height of the last ice age. This discovery challenges previous timelines and human migration routes into the Americas.
The newly discovered dinosaur Vectiraptor greeni, from the Early Cretaceous period, was a large, heavily built relative of Velociraptor with powerful claws and serrated teeth. It is believed to have hunted larger prey, using its strength rather than speed.
A recent study published in PaleoAmerica journal challenges the long-held theory that Native Americans originated from Japan. The research, led by Professor Richard Scott, analyzed genetics and skeletal biology of teeth samples from multiple continents, finding little connection between the Jomon people and Native Americans.
A team of scientists from Princeton University found that the Arctic Ocean's nitrogen supply is limited by strong stratification, preventing plankton growth and potentially affecting fish populations. The research used fossilized plankton to study the history of nitrogen sources and supply rates in the western and central Arctic Ocean.
Researchers discovered that horses crossed the Beringian Land Bridge multiple times, influencing genetic diversity and settling both continents before becoming extinct in North America
A new study shows that horse populations on North America and Eurasia remained connected through the Bering Land Bridge, interbreeding multiple times over hundreds of thousands of years. The findings demonstrate genetic continuity between the horses that died out in North America and those domesticated in Eurasia.
A 9,000-year-old child's tooth has revealed insights into Alaska's ancient people, their genetic makeup and diets. The tooth, linked to the Ancient Beringian lineage, indicates that these groups remained in Alaska for thousands of years after migrating across the Bering Land Bridge.
Researchers from AWI demonstrated how the Arctic Ocean transformed into a saline body after the land bridge between Greenland and Scotland submerged, enabling Atlantic circulation. The study found that changes occurred when the ocean passage reached a depth of over 50 meters below the surface mixed layer.
Research suggests that land bridges between ancient India and Eurasia acted as 'freeways' for the exchange of animals and plants. Indian Dragon Lizards show multiple origins in Southeast Asia, indicating a two-way flow of biodiversity. The findings shed light on the origins of modern species.
Researchers question widely-held assumptions about hippo migration patterns, citing a lack of evidence for their ability to swim. Despite this, hippos have been found on several islands, sparking debate about the role of land bridges in their colonization.
A CU-led study bolsters the theory that early Americans may have been isolated on the Bering Land Bridge for thousands of years before spreading throughout the Americas. The research links genetics to paleoecological evidence, suggesting a population of hundreds or thousands lived in central Beringia for 5,000 years or more.
Scientists suggest ancestors of Native Americans lived in shrub-tundra refugia on Bering land bridge for 10,000 years. The environment provided resources such as wood for construction and fires, allowing people to persist during the last glacial maximum.
Researchers discovered that Native American ancestors may have settled in a region between Siberia and Alaska, using woody plants for fires to survive the Arctic winter. This finding fills a 10,000-year gap in the story of peopling the New World.
Scientists have discovered two new, closely related bee species on Coiba Island in Panama, which originated from a group of stingless bees that moved into Central America. The presence of one of these new species on the island raises questions about Panama's geological history and biodiversity.
Scientists studied ancient bird migration and found that northern birds had the ability to cross the land bridge, while southern species were restricted. The study reveals an uneven species migration pattern, with many New World oscine species breeding in South America despite having northern origins.
A University of British Columbia study found that tropical birds waited until the formation of the Isthmus of Panama land bridge to migrate northward, revealing a key role in biodiversity exchange. The research suggests that many tropical bird species were reluctant to fly across open water and instead waited for the land bridge comple...
A CU-Boulder study reveals that prehistoric mammals in the high Arctic lived year-round in a warm and humid climate with lush forests. The findings contradict traditional migration theories, suggesting that these animals adapted to the harsh winter conditions by altering their diet.
A new study analyzing ancient DNA from 160 mammoth samples across Holarctica suggests that North American mammoths replaced dwindling Siberian populations around 50,000 to 5,000 years ago. The findings refute the notion of climate change as a direct cause of extinction, instead pointing to a complex pattern of migration and evolution.
A University of Florida-led study has determined that Titanis walleri, a prehistoric 'terror bird,' arrived in North America from South America 2 million years before the land bridge formed. The team used geochemical analysis to revise the ages of terror bird fossils, finding they were 5 million years old.
Scientists have discovered that global warming led to drastic changes in ancient forests 55 million years ago, including the appearance of tropical plants from Europe. This finding has implications for understanding the evolution of modern primates and their adaptations.
A team of researchers, led by UMass geologist Julie Brigham-Grette, is conducting a comprehensive scientific deployment to study the Bering and Chukchi Seas. The mission aims to understand how quickly the land bridge formed or was flooded with changes in global sea level, cutting off migration routes for people and plants.
A new study confirms the Bering land bridge was not inundated by rising seas until about 11,000 years ago. The study reveals that the vegetation at the time consisted primarily of tundra plants and shrubs, unsuitable for long-term habitation by large grazing mammals.