Unchecked hunting and environmental degradation in tropical forests, which previous studies have correlated with the reduction of large animals in this biome, may impede the generational renewal of large fruit and seed-producing ...
Plants & Animals
Feb 10, 2023
0
31
A new study reveals that the evolution of sunscreen pigments in lichen-forming fungi has been governed by the reshuffling of existing enzyme genes and novel accessory genes into new gene clusters.
Evolution
Feb 9, 2023
0
16
The discovery of an 80-million-year-old fossil plant pushes back the known origins of lamiids to the Cretaceous, extending the record of nearly 40,000 species of flowering plants including modern-day staple crops like coffee, ...
Evolution
Feb 7, 2023
0
2526
Alberta has been ground zero for dinosaur discoveries in Canada since the 1880s, when several Geological Survey of Canada expeditions collected dinosaur bones from the southern part of the province.
Evolution
Feb 3, 2023
0
54
A study led by The University of Texas at Austin is providing a glimpse into dinosaur and bird diversity in Patagonia during the Late Cretaceous, just before the non-avian dinosaurs went extinct.
Paleontology & Fossils
Jan 12, 2023
0
172
Have you ever eaten chicken feet? If you haven't, you might be surprised to learn there's actually quite a bit of flesh down there. And scales too! They're wonderful—and informative—pieces of engineering.
Evolution
Dec 21, 2022
0
153
Glaciers have been present somewhere on Earth for at least 60 million years, a period stretching back almost to the time of the dinosaurs. That's the key finding of our new research, which pushes the date when the planet ...
Earth Sciences
Dec 16, 2022
0
9
Australia, home to the most unusual animal species on the planet that defy imagination, can now lay claim to being the wellspring of modern mammal evolution.
Evolution
Dec 15, 2022
0
117
Scratches on dinosaur teeth could reveal what they really ate. For the first time, dental microwear texture analysis (DMTA) has been used to infer the feeding habits of large theropods, including Allosaurus and T. rex.
Paleontology & Fossils
Dec 9, 2022
0
184
Queensland Museum Network paleontologists have excavated Australia's first head and associated body of a 100-million-year-old long-necked marine reptile in what has been described as the Rosetta Stone of marine reptile paleontology.
Evolution
Dec 6, 2022
0
61
The Cretaceous ( /krɪˈteɪʃəs/), derived from the Latin "creta" (chalk), usually abbreviated K for its German translation Kreide (chalk), is a geologic period and system from circa 145.5 ± 4 to 65.5 ± 0.3 million years (Ma) ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the Cenozoic era. It is the youngest period of the Mesozoic era, and at 80 million years long, the longest period of the Phanerozoic Eon. The end of the Cretaceous defines the boundary between the Mesozoic and Cenozoic eras. In many languages this period is known as "chalk period".
The Cretaceous was a period with a relatively warm climate and high eustatic sea level. The oceans and seas were populated with now extinct marine reptiles, ammonites and rudists; and the land by dinosaurs. At the same time, new groups of mammals and birds as well as flowering plants appeared. The Cretaceous ended with one of the largest mass extinctions in Earth history, the K–T extinction, when many species, including non-avian dinosaurs, pterosaurs, and large marine reptiles, disappeared.
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