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An international collaboration between scientists and researchers has lead to the discovery of Earth s earliest known mammal mdash; the 225 million-year-old Brasilodon quadrangularis.Using fossil tooth and bone records, researchers with theNatural History Museum in London, King s College London and the Federal University of Rio Grande do Sul in Porto Alegre say the mammal was a small shrew-like creature around 8 inches long with two sets of teeth and walked among some of the oldest dinosaurs.                Illustration of the Brasilodon quadrangularis, the earliest known extinct mammal <a href=https://www.stanley-cup.co.nz>stanley cup</a> .                                                      2022 Anatomical Society/Wiley                                         Comparative studies with recent mammal dentitions and tooth replacement modes suggest that this was a placental, relatively short-lived animal,  Dr. Martha Richter, a scientific associate at the museum and senior author on the paper, said in a news release.  This is the oldest known mammal in the fossil record contributing to our understanding of the e <a href=https://www.stanley-cups.us>stanley cup</a> cological landscape of this period and the evolution of modern mammals.                                         According to a team of Brazilian and British scientists, the dentalrecords date back 225 million years, to 25 million <a href=https://www.cup-stanley.ca>stanley cup</a>  years after the Permian-Triassic mass extinction event that led to the extinction of roughly 70% of terrestrial vertebrate families.They say the Brasilodon quadrangularis predates the previously co Roup Finding missing migrants along the U.S.-Mexico border, the world s deadliest land migration route
DEERFIELD BEACH, Fla. -- A chemistry teacher at the Florida school where 17 people were shot to death has been arrested. Authorities say he left a loaded gun in a public restroom, where a drunk homeless man picked it up and fired it.No one was injured, but the teacher at Marjory Sto <a href=https://www.adidas-yeezy.de>yeezy</a> neman Douglas High School is now charged with failing to safely store his weapon.A Broward Sheriff s <a href=https://www.airmaxplus.es>air max</a>  report says 43-year-old Sean Simpson, who carries a concealed weapons permit, left his Glock 9 mm in a restroom at the Deerfield Beach Pier on Sunday. He told deputies he was returning to get it when he heard a gunshot, and found the man holding the pistol.                                        Simpson told a sheriff s deput <a href=https://www.af1.it>af1</a> y he wrestled the gun away from the man, CBS Miami station WFOR-TV reports.According to the arrest report, Simpson said he forgot to pick the gun up after finishing in the restroom.        According to the Miami Herald, Simpson said after the Stoneman Douglas shooting that he would be willing to carry a gun on campus if it were allowed.On Tuesday, the county school board voted against arming teachers.          Records show Simpson posted a $250 bond. It s not known whether he has a lawyer.                                                                                                                          Gun map: Ownership by state                      52 photos                                                                                                    Parkland School
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