//www.koonmotors.com/news/fossils_ruins/ Archaeology news. Articles on ancient Egypt, ancient Rome, ancient Greece and other civilizations. en-us Fri, 30 Jun 2023 16:54:22 EDT Fri, 30 Jun 2023 16:54:22 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/fossils_ruins/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/06/230628201312.htm Scientists have wondered what happens to the organic and inorganic carbon that Earth's Pacific Plate carries with it as it slides into the planet's interior along the volcano-studded Ring of Fire. A new study suggests a notable amount of such subducted carbon returns to the atmosphere rather than traveling deep into Earth's mantle. Wed, 28 Jun 2023 20:13:12 EDT //www.koonmotors.com/releases/2023/06/230628201312.htm //www.koonmotors.com/releases/2023/06/230628131038.htm Volcanic disasters have been studied since Pompeii was buried in 79 A.D., leading the public to believe that scientists already know why, where, when and how long volcanoes will erupt. But a volcanologist said these fundamental questions remain a mystery. Wed, 28 Jun 2023 13:10:38 EDT //www.koonmotors.com/releases/2023/06/230628131038.htm //www.koonmotors.com/releases/2023/06/230628130358.htm Urea reacts extremely quickly under the conditions that existed when our planet was newly formed. This new insight furthers our understanding of how life on Earth might have begun. Wed, 28 Jun 2023 13:03:58 EDT //www.koonmotors.com/releases/2023/06/230628130358.htm //www.koonmotors.com/releases/2023/06/230628125214.htm 在地球上的海洋中氧含量的分析provide some rare, good news about the health of the seas in a future, globally warmed world. A study analyzing ocean sediment shows that ocean oxygen levels in a key area were higher during the Miocene warm period, some 16 million years ago when the Earth's temperature was hotter than it is today. Wed, 28 Jun 2023 12:52:14 EDT //www.koonmotors.com/releases/2023/06/230628125214.htm //www.koonmotors.com/releases/2023/06/230627225225.htm The lower jaws of lizards, birds, fish and even dinosaurs are comprised of multiple bones per side. Yet mammals diverged from all other vertebrates and settled on just one bone, repurposing the extra bones into a more elaborate inner ear, perhaps the better to hear. The single bone per side, fused in primates into one jawbone, makes the jaw more rigid. A paleontologist asks, Did the stiffer, rigid jaw make mammals more successful? Tue, 27 Jun 2023 22:52:25 EDT //www.koonmotors.com/releases/2023/06/230627225225.htm //www.koonmotors.com/releases/2023/06/230627224821.htm The specialization in sheep in the early Neolithic populations of Dalmatia, Croatia, may have been related to the rapid expansion of these communities and the spread of agriculture throughout the central and western Mediterranean. Tue, 27 Jun 2023 22:48:21 EDT //www.koonmotors.com/releases/2023/06/230627224821.htm //www.koonmotors.com/releases/2023/06/230627191544.htm Scientists have filled a major gap in the state's fossil record -- describing the first known Jurassic vertebrate fossils in Texas. The weathered bone fragments are from the limbs and backbone of a plesiosaur, an extinct marine reptile. Tue, 27 Jun 2023 19:15:44 EDT //www.koonmotors.com/releases/2023/06/230627191544.htm //www.koonmotors.com/releases/2023/06/230627123017.htm Scientists have been mystified as to why animals are missing in much of the fossil record. Researchers have now developed a new method to determine if animals really were absent during certain geological eras, or if they were present but too fragile to be preserved. Tue, 27 Jun 2023 12:30:17 EDT //www.koonmotors.com/releases/2023/06/230627123017.htm //www.koonmotors.com/releases/2023/06/230627123015.htm A Cretaceous origin for placental mammals, the group that includes humans, dogs and bats, has been revealed by in-depth analysis of the fossil record, showing they co-existed with dinosaurs for a short time before the dinosaurs went extinct. Tue, 27 Jun 2023 12:30:15 EDT //www.koonmotors.com/releases/2023/06/230627123015.htm //www.koonmotors.com/releases/2023/06/230626164301.htm 50 million years ago in what is now northwestern Colorado, a katydid died, sank to the bottom of a lake and was quickly buried in fine sediments, where it remained until its compressed fossil was recovered in recent years. When researchers examined the fossil under a microscope, they saw that not only had many of the insect's hard structures been preserved in the compressed shale, so had several internal organs and tissues, which are not normally fossilized. Mon, 26 Jun 2023 16:43:01 EDT //www.koonmotors.com/releases/2023/06/230626164301.htm //www.koonmotors.com/releases/2023/06/230626164242.htm A team of researchers discover viruses impact the genetic coding of purple (PSB) and green (GSB) sulfur bacteria. Mon, 26 Jun 2023 16:42:42 EDT //www.koonmotors.com/releases/2023/06/230626164242.htm //www.koonmotors.com/releases/2023/06/230626164144.htm How the megalodon, a shark that went extinct 3.6 million years ago, stayed warm was a matter of speculation among scientists. Using an analysis of tooth fossils from the megalodon and other sharks of the same period, a study suggests the animal was able to maintain a body temperature well above the temperature of the water in which it lived. The finding could help explain why the megalodon went extinct during the Pliocene Epoch. Mon, 26 Jun 2023 16:41:44 EDT //www.koonmotors.com/releases/2023/06/230626164144.htm //www.koonmotors.com/releases/2023/06/230626163847.htm Researchers have identified the oldest decisive evidence of humans' close evolutionary relatives butchering and likely eating one another. Mon, 26 Jun 2023 16:38:47 EDT //www.koonmotors.com/releases/2023/06/230626163847.htm //www.koonmotors.com/releases/2023/06/230623161208.htm The Bachman's warbler, a songbird that was last seen in North America nearly 40 years ago, was a distinct species and not a hybrid of its two living sister species, according a new study in which the full genomes of seven museum specimens of the bird were sequenced. Fri, 23 Jun 2023 16:12:08 EDT //www.koonmotors.com/releases/2023/06/230623161208.htm //www.koonmotors.com/releases/2023/06/230623161131.htm The El Gigante rockshelter in western Honduras is among only a handful of archaeological sites in the Americas that contain well-preserved botanical remains spanning the last 11,000 years. Considered one of the most important archaeological sites discovered in Central America in the last 40 years, El Gigante was recently nominated as a UNESCO World Heritage site. Fri, 23 Jun 2023 16:11:31 EDT //www.koonmotors.com/releases/2023/06/230623161131.htm //www.koonmotors.com/releases/2023/06/230622182815.htm According to a new study, eukaryotes -- complex life forms with nuclei in their cells, including all the world's plants, animals, insects and fungi -- trace their roots to a common Asgard archaean ancestor. That means eukaryotes are, in the parlance of evolutionary biologists, a 'well-nested clade' within Asgard archaea, similar to how birds are one of several groups within a larger group called dinosaurs, sharing a common ancestor. Thu, 22 Jun 2023 18:28:15 EDT //www.koonmotors.com/releases/2023/06/230622182815.htm //www.koonmotors.com/releases/2023/06/230622120919.htm The first ever 3D seismic imaging of a subducting seamount shows a previously unknown sediment trail in Earth's crust off the coast of New Zealand. Scientists think the sediment patches help release tectonic pressure gradually in slow slip earthquakes instead of violent tremors. The findings will help researchers search for similar patterns at other subduction zones like Cascadia in the U.S. Pacific Northwest. Thu, 22 Jun 2023 12:09:19 EDT //www.koonmotors.com/releases/2023/06/230622120919.htm //www.koonmotors.com/releases/2023/06/230622120850.htm The genome of a glass sponge species suggests that silica skeletons evolved independently in several groups of sponges. Thu, 22 Jun 2023 12:08:50 EDT //www.koonmotors.com/releases/2023/06/230622120850.htm //www.koonmotors.com/releases/2023/06/230621164756.htm Fifteen years of archaeological work in the Tam Pa Ling cave in northeastern Laos has yielded a reliable chronology of early human occupation of the site. The team's excavations through the layers of sediments and bones that gradually washed into the cave and were left untouched for tens of thousands of years reveals that humans lived in the area for at least 70,000 years -- and likely even longer. Wed, 21 Jun 2023 16:47:56 EDT //www.koonmotors.com/releases/2023/06/230621164756.htm //www.koonmotors.com/releases/2023/06/230621003106.htm The distant ancestors of modern horses had hooved toes instead of a single hoof, which vanished over time, according to researchers. Wed, 21 Jun 2023 00:31:06 EDT //www.koonmotors.com/releases/2023/06/230621003106.htm //www.koonmotors.com/releases/2023/06/230620174452.htm A team of scientists has observed past episodic intraplate magmatism and corroborated the existence of a partial melt channel at the base of the Cocos Plate. Situated 60 kilometers beneath the Pacific Ocean floor, the magma channel covers more than 100,000 square kilometers, and originated from the Galápagos Plume more than 20 million years ago, supplying melt for multiple magmatic events -- and persisting today. Tue, 20 Jun 2023 17:44:52 EDT //www.koonmotors.com/releases/2023/06/230620174452.htm //www.koonmotors.com/releases/2023/06/230620113811.htm Research sheds light on human evolution, and demonstrates an approach for identifying significant differences in how genes are used between closely-related species. Tue, 20 Jun 2023 11:38:11 EDT //www.koonmotors.com/releases/2023/06/230620113811.htm //www.koonmotors.com/releases/2023/06/230620113809.htm The face of a 16-year-old woman buried near Cambridge (UK) in the 7th century with an incredibly rare gold and garnet cross (the 'Trumpington Cross') has been reconstructed following analysis of her skull. The striking image is going on public display for the first time on 21st June, with new scientific evidence showing that she moved to England from Central Europe as a young girl, leading to an intriguing change in her diet. Tue, 20 Jun 2023 11:38:09 EDT //www.koonmotors.com/releases/2023/06/230620113809.htm //www.koonmotors.com/releases/2023/06/230620113755.htm Machine learning can help extract important information from the huge numbers of plant specimens stored in herbaria, say scientists. Tue, 20 Jun 2023 11:37:55 EDT //www.koonmotors.com/releases/2023/06/230620113755.htm //www.koonmotors.com/releases/2023/06/230620113738.htm New research showed that the plume emitted by the Hunga Volcano eruption in 2022 created the highest lightning flash rates ever recorded on Earth, more than any storm ever documented. Tue, 20 Jun 2023 11:37:38 EDT //www.koonmotors.com/releases/2023/06/230620113738.htm //www.koonmotors.com/releases/2023/06/230619120145.htm In the age of dinosaurs, many marine reptiles had extremely long necks compared to reptiles today. While it was clearly a successful evolutionary strategy, paleontologists have long suspected that their long-necked bodies made them vulnerable to predators. Now, after almost 200 years of continued research, direct fossil evidence confirms this scenario for the first time in the most graphic way imaginable. Mon, 19 Jun 2023 12:01:45 EDT //www.koonmotors.com/releases/2023/06/230619120145.htm //www.koonmotors.com/releases/2023/06/230616161945.htm First armoured dinosaur to be described from the Isle of Wight in 142 years, shows Ankylosaurs may have been far more diverse than originally thought Fri, 16 Jun 2023 16:19:45 EDT //www.koonmotors.com/releases/2023/06/230616161945.htm //www.koonmotors.com/releases/2023/06/230616161940.htm A scientific team has discovered the earliest-known evidence of freshwater fishing by ancient people in the Americas. The research offers a glimpse at how early humans used a changing landscape and could offer insight for modern people facing similar changes. Fri, 16 Jun 2023 16:19:40 EDT //www.koonmotors.com/releases/2023/06/230616161940.htm //www.koonmotors.com/releases/2023/06/230616161908.htm A 3D model of a 407-million-year-old plant fossil has overturned thinking on the evolution of leaves. The research has also led to fresh insights about spectacular patterns found in plants. Fri, 16 Jun 2023 16:19:08 EDT //www.koonmotors.com/releases/2023/06/230616161908.htm //www.koonmotors.com/releases/2023/06/230615183117.htm The Ontong Java Plateau, a volcanically-formed underwater plateau located in the Pacific Ocean north of the Solomon Islands, is younger and its eruption was more protracted than previously thought, new research suggests. Thu, 15 Jun 2023 18:31:17 EDT //www.koonmotors.com/releases/2023/06/230615183117.htm //www.koonmotors.com/releases/2023/06/230615183112.htm Climate change in current times has created problems for humans such as wildfires and reduced growing seasons for staple crops, spilling over into economic effects. Many researchers predict, and have observed in published literature, an increase in interpersonal violence and homicides when temperatures increase. Violence during climatic change has evidence in history, anthropology researchers say. Thu, 15 Jun 2023 18:31:12 EDT //www.koonmotors.com/releases/2023/06/230615183112.htm //www.koonmotors.com/releases/2023/06/230614220731.htm The same type of machine learning methods used to pilot self-driving cars and beat top chess players could help type-1 diabetes sufferers keep their blood glucose levels in a safe range. Wed, 14 Jun 2023 22:07:31 EDT //www.koonmotors.com/releases/2023/06/230614220731.htm //www.koonmotors.com/releases/2023/06/230614220724.htm Digital modelling of legendary fossil's soft tissue suggests Australopithecus afarensis had powerful leg and pelvic muscles suited to tree dwelling, but knee muscles that allowed fully erect walking. Wed, 14 Jun 2023 22:07:24 EDT //www.koonmotors.com/releases/2023/06/230614220724.htm //www.koonmotors.com/releases/2023/06/230614220621.htm Over the past decades, researchers thought Earth was created over a period of more than 100 million years. However, a new study from suggests that the creation of Earth was much more rapid, and that water and other essential ingredients for life were delivered to Earth very early on. Wed, 14 Jun 2023 22:06:21 EDT //www.koonmotors.com/releases/2023/06/230614220621.htm //www.koonmotors.com/releases/2023/06/230614220617.htm A survey of groundwater samples drawn from aquifers beneath more than 80,000 square miles of Canadian prairie reveals ancient groundwaters harbor not only diverse and active microbial communities, but also unexpectedly large numbers of microbial cells. Strikingly, some of these microbes seem to produce 'dark oxygen' (in the absence of sunlight) in such abundance that the oxygen may nourish not only those microbes, but may leak into the environment and support other oxygen-reliant microbes that can't produce it themselves. Wed, 14 Jun 2023 22:06:17 EDT //www.koonmotors.com/releases/2023/06/230614220617.htm //www.koonmotors.com/releases/2023/06/230614220525.htm Hundreds of human skulls and mandibles recovered from the Crenshaw site in southwest Arkansas are the remains of ancestors of the Caddo Nation and not foreign enemies, according to a new study. Wed, 14 Jun 2023 22:05:25 EDT //www.koonmotors.com/releases/2023/06/230614220525.htm //www.koonmotors.com/releases/2023/06/230614220521.htm Many men in northern Europe over the age of 60 suffer from the so-called Viking disease, which means that the fingers lock in a bent position. Now researchers have used data from over 7,000 affected individuals to look for genetic risk factors for the disease. The findings show that three of the strongest risk factors are inherited from Neanderthals. Wed, 14 Jun 2023 22:05:21 EDT //www.koonmotors.com/releases/2023/06/230614220521.htm //www.koonmotors.com/releases/2023/06/230613190839.htm Computer models confirm that the African Superplume is responsible for the unusual deformations, as well as rift-parallel seismic anisotropy observed beneath the East African Rift System. Tue, 13 Jun 2023 19:08:39 EDT //www.koonmotors.com/releases/2023/06/230613190839.htm //www.koonmotors.com/releases/2023/06/230613190828.htm Lacking bones, brains, and even a complete gut, the body plans of simple animals like sea anemones appear to have little in common with humans and their vertebrate kin. Nevertheless, new research shows that appearances can be deceiving, and that a common genetic toolkit can be deployed in different ways to drive embryological development to produce very different adult body plans. It is well established that sea anemones, corals, and their jellyfish relatives shared a common ancestor with humans that plied the Earth's ancient oceans over 600 million years ago. A new study from the Gibson Lab, published in Current Biology on June 13, 2023, illuminates the genetic basis for body plan development in the starlet sea anemone, Nematostella vectensis. This new knowledge paints a vivid picture of how some of the earliest animals on earth progressed from egg to embryo to adult. Tue, 13 Jun 2023 19:08:28 EDT //www.koonmotors.com/releases/2023/06/230613190828.htm //www.koonmotors.com/releases/2023/06/230613190825.htm The first side-necked turtle ever to be found in the UK has been discovered by an amateur fossil collector and palaeontologists. Tue, 13 Jun 2023 19:08:25 EDT //www.koonmotors.com/releases/2023/06/230613190825.htm //www.koonmotors.com/releases/2023/06/230613190821.htm Hybrid plants and animals have complicated genomes. A biologist has discovered a way to reveal their parent species. Tue, 13 Jun 2023 19:08:21 EDT //www.koonmotors.com/releases/2023/06/230613190821.htm //www.koonmotors.com/releases/2023/06/230613190754.htm Extinct kangaroos used alternative methods to their famous hop according to comprehensive analysis. Tue, 13 Jun 2023 19:07:54 EDT //www.koonmotors.com/releases/2023/06/230613190754.htm //www.koonmotors.com/releases/2023/06/230612114738.htm The seemingly stable regions of the Earth's continental plates -- the so-called stable cratons -- have suffered repetitive deformation below their crust since their formation in the remote past, according to new research from the University of Illinois Urbana-Champaign. This hypothesis defies decades of conventional plate tectonics theory and begs to answer why most cratons have remained structurally stable while their underbellies have experienced significant change. Mon, 12 Jun 2023 11:47:38 EDT //www.koonmotors.com/releases/2023/06/230612114738.htm //www.koonmotors.com/releases/2023/06/230612114643.htm The earliest reptiles, birds and mammals may have borne live young, researchers have revealed. Mon, 12 Jun 2023 11:46:43 EDT //www.koonmotors.com/releases/2023/06/230612114643.htm //www.koonmotors.com/releases/2023/06/230609125712.htm Researchers have shed light on the life of the ancient reptile Rhynchosaur, which walked the earth between 250-225 million years ago, before being replaced by the dinosaurs. Fri, 09 Jun 2023 12:57:12 EDT //www.koonmotors.com/releases/2023/06/230609125712.htm //www.koonmotors.com/releases/2023/06/230608195656.htm Recent scientific discoveries have shown that Neanderthal genes comprise some 1 to 4% of the genome of present-day humans whose ancestors migrated out of Africa, but the question remained open on how much those genes are still actively influencing human traits -- until now. Thu, 08 Jun 2023 19:56:56 EDT //www.koonmotors.com/releases/2023/06/230608195656.htm //www.koonmotors.com/releases/2023/06/230608195648.htm A groundbreaking new paper focuses on the size and abundance of living and fossil African large mammals, shedding light on the ecological dynamics behind the decline of these iconic creatures. The findings challenge previous assumptions about the causes of megafaunal extinctions in Africa and provide new insights into the restructuring of ecosystems over millions of years. Thu, 08 Jun 2023 19:56:48 EDT //www.koonmotors.com/releases/2023/06/230608195648.htm //www.koonmotors.com/releases/2023/06/230608121013.htm Human-induced warming, largely caused by the burning of fossil fuels, reached an average of 1.14°C for the most recent decade (2013 to 2022) above pre-industrial levels. This is up from 1.07°C between 2010 and 2019. Human-induced warming is now increasing at a pace of over 0.2°C per decade. The analysis also found that greenhouse gas emissions were 'at an all-time high', with human activity resulting in the equivalent of 54 (+/-5.3) gigatonnes (or billion metric tonnes) of carbon dioxide being released into the atmosphere on average every year over the last decade (2012-2021). Given the speed at which the global climate system is changing, the scientists argue that policymakers, climate negotiators and civil society groups need to have access to up-to-date and robust scientific evidence on which to base decisions. Thu, 08 Jun 2023 12:10:13 EDT //www.koonmotors.com/releases/2023/06/230608121013.htm //www.koonmotors.com/releases/2023/06/230608120950.htm The Daitari greenstone belt shares a similar geologic make-up when compared to the greenstones exposed in the Barberton and Nondweni areas of South Africa and those from the Pilbara Craton of north-western Australia. Thu, 08 Jun 2023 12:09:50 EDT //www.koonmotors.com/releases/2023/06/230608120950.htm //www.koonmotors.com/releases/2023/06/230607215834.htm Curly hair does more than simply look good -- it may explain how early humans stayed cool while conserving water, according to researchers who studied the role human hair textures play in regulating body temperature. The findings can shed light on an evolutionary adaptation that enabled the human brain to grow to modern-day sizes. Wed, 07 Jun 2023 21:58:34 EDT //www.koonmotors.com/releases/2023/06/230607215834.htm //www.koonmotors.com/releases/2023/06/230607215828.htm A genomic analysis of ancient human remains from Morocco in northwest Africa revealed that food production was introduced by Neolithic European and Levantine migrants and then adopted by local groups. Wed, 07 Jun 2023 21:58:28 EDT //www.koonmotors.com/releases/2023/06/230607215828.htm //www.koonmotors.com/releases/2023/06/230607215807.htm A newly discovered plant-eating dinosaur may have been a species' 'last gasp' during a period when Earth's warming climate forced massive changes to global dinosaur populations. Wed, 07 Jun 2023 21:58:07 EDT //www.koonmotors.com/releases/2023/06/230607215807.htm //www.koonmotors.com/releases/2023/06/230607124112.htm 新发现的生物标志物特征指向一个whole range of previously unknown organisms that dominated complex life on Earth about a billion years ago. They differed from complex eukaryotic life as we know it, such as animals, plants and algae in their cell structure and likely metabolism, which was adapted to a world that had far less oxygen in the atmosphere than today. Wed, 07 Jun 2023 12:41:12 EDT //www.koonmotors.com/releases/2023/06/230607124112.htm //www.koonmotors.com/releases/2023/06/230606164836.htm Geochemists report findings from collected and analyzed helium and carbon isotopic data from springs along a nearly 250-mile segment of Alaska's Denali Fault. The fault's mantle fluid flow rates, they report, fall in the range observed for the world's other major and active strike-slip faults that form plate boundaries. Tue, 06 Jun 2023 16:48:36 EDT //www.koonmotors.com/releases/2023/06/230606164836.htm //www.koonmotors.com/releases/2023/06/230605181213.htm Researchers show that an evolutionary change in the length of lizards' legs can have a significant impact on vegetation growth and spider populations on small islands in the Bahamas. This is one of the first times, the researchers say, that such dramatic evolution-to-environment effects have been documented in a natural setting. Mon, 05 Jun 2023 18:12:13 EDT //www.koonmotors.com/releases/2023/06/230605181213.htm //www.koonmotors.com/releases/2023/06/230602115057.htm A study suggests that the answers to how and why mountains form are buried deeper than once thought. Clues in the landscape of southern Italy allowed researchers to produce a long-term, continuous record of rock uplift, the longest and most complete record of its kind. Fri, 02 Jun 2023 11:50:57 EDT //www.koonmotors.com/releases/2023/06/230602115057.htm //www.koonmotors.com/releases/2023/06/230601182927.htm The symbiotic organisms that live in corals and provide them with their dramatic colors contain fragments of ancient RNA viruses that are as much as 160 million years old. Thu, 01 Jun 2023 18:29:27 EDT //www.koonmotors.com/releases/2023/06/230601182927.htm //www.koonmotors.com/releases/2023/06/230601160150.htm Underwater volcanism and its hydrothermal activity play an important role in marine biogeochemical cycles, especially the carbon cycle. But the nature of hydrothermal activity at 'petit-spot' volcanoes have not been revealed at all. Now, scientists reveal that petit-spot hydrothermal activity occurs on the deepest seafloor known to date and could release carbon dioxide (CO2) and methane, which may have implications for the global carbon cycle. Thu, 01 Jun 2023 16:01:50 EDT //www.koonmotors.com/releases/2023/06/230601160150.htm //www.koonmotors.com/releases/2023/06/230601160144.htm Palaeontologists studying a British dinosaur tooth have concluded that several distinct groups of spinosaurs -- dinosaurs with fearsome crocodile-like skulls -- inhabited southern England over 100 million years ago. Thu, 01 Jun 2023 16:01:44 EDT //www.koonmotors.com/releases/2023/06/230601160144.htm //www.koonmotors.com/releases/2023/05/230531150053.htm Geneticists have unearthed a major event in the ancient history of sturgeons and paddlefish that has significant implications for the way we understand evolution. They have pinpointed a previously hidden 'whole genome duplication' (WGD) in the common ancestor of these species, which seemingly opened the door to genetic variations that may have conferred an advantage around the time of a major mass extinction some 200 million years ago. Wed, 31 May 2023 15:00:53 EDT //www.koonmotors.com/releases/2023/05/230531150053.htm