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Using a wrist-based device that measures movement, over 5,000 participants’ activity levels were collected for two weeks.

Identifying if we’re more of an early bird or night owl may help predict our risk of potential health problems.Ī recent study from the Scandinavian Journal of Medicine and Science in Sports looked at whether the body clock is related to levels of physical activity. Most obvious is our sleep patterns however, our internal clock also plays a role in our hunger and eating patterns, hormone levels, and maybe even our mood.ĭoes being an early bird or night owl affect our health?Ī growing body of research shows that we may want to pay more attention to circadian rhythm, also called our chronotype. This internal clock is called our circadian rhythm, each person’s unique internal timekeeper and the body’s own master controller of many functions. Some people seem to be hardwired to sleep early, while others get a second wind and tend to sleep late. Our internal clock controls more than sleep patternsīeing an early bird, or the opposite night owl, is usually not something that is thought of as being highly under our control. For an early bird type, a 9 pm bedtime may be the norm, and rising at 5 am without an alarm clock feels relatively effortless. Early birds, or those who tend to wake early and go to bed early, are people who naturally feel sleepy earlier in the evening and naturally wake early in the morning. Pterodactylus, a short-tailed pterosaur from Europe.Being an early bird has long been associated with a go-getter attitude.Rhamphorhynchus a long-tailed pterosaur from Europe.Archaeopteryx, the first known bird, from Europe.Gargoyleosaurus, a thyreophoran from North America.Camptosaurus, an ornithopod from North America and possibly Europe.Dryosaurus, a North American ornithopod.Stegosaurus, a thyreophoran from North America and Europe.Tuojiangosaurus, a thyreophoran from Asia.Yangchuanosaurus, a large theropod from Asia.Compsognathus, a small theropod from Europe.Ceratosaurus, a medium-sized Jurassic carnivore of North America, Europe, and possibly Africa.Torvosaurus, a large Jurassic carnivore, from North America and Europe.Epanterias, one of the largest Jurassic carnivores, from North America (possibly just Allosaurus).Allosaurus, possibly the biggest Jurassic predator, the most common Late Jurassic theropod of North America, also present in Europe.Giraffatitan, another large sauropod from Africa (usually recognized as a species of Brachiosaurus).Dicraeosaurus, a large herbivorous sauropod dinosaur from Africa.Supersaurus, possibly the largest North American sauropod of them all.Europasaurus, a small herbivorous sauropod dinosaur from Europe.Barosaurus, a large herbivorous sauropod dinosaur from North America.Diplodocus, a large herbivorous sauropod dinosaur from North America.Brontosaurus, a large herbivorous sauropod dinosaur from North America.Brachiosaurus, a large herbivorous sauropod dinosaur from North America.Apatosaurus, a large herbivorous sauropod dinosaur from North America.Camarasaurus, a large herbivorous sauropod dinosaur from North America.Listed here are only a few of the many Jurassic animals: Other animals, such as some crocodylomorphs and the first birds, appeared in the Jurassic. This epoch is well known for many famous types of dinosaurs, such as the sauropods, the theropods, the thyreophorans, and the ornithopods. However, at this time, the Atlantic Ocean was relatively narrow. The result of this break-up was the spawning of the Atlantic Ocean. ( May 2008)ĭuring the Late Jurassic Epoch, Pangaea broke up into two supercontinents, Laurasia to the north, and Gondwana to the south. The Late Jurassic is divided into three ages, which correspond with the three (faunal) stages of Upper Jurassic rock: In the past, Malm was also used to indicate the unit of geological time, but this usage is now discouraged to make a clear distinction between lithostratigraphic and geochronologic/chronostratigraphic units. In European lithostratigraphy, the name " Malm" indicates rocks of Late Jurassic age. The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 161.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata. Horizon of the Ammonite Cardioceras redcliffense. Vertical axis scale: millions of years ago. Subdivision of the Jurassic according to the ICS, as of 2022.