The tiger shark is one of the largest predatory sharks known today. This shark is a cosmopolitan species occurring in all oceans worldwide. It is characterized by a striped pattern on its back, which is well marked in juveniles ...
Plants & Animals
Mar 24, 2021
0
5
If you want to understand an ecosystem, look at what the species within it eat. In studying food webs—how animals and plants in a community are connected through their dietary preferences—ecologists can piece together ...
Archaeology
Jan 14, 2021
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82
The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants that they relied on for food. Fossil leaf assemblages from Patagonia, Argentina, suggest ...
Paleontology & Fossils
Jan 5, 2021
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328
Ancient marine creatures once believed to have been mere 'bit players' in the fossil record have now found fame.
Paleontology & Fossils
Mar 5, 2020
0
102
A new fossil study from Stanford University shows extinction was unexpectedly common among smaller sea creatures in the deep past.
Plants & Animals
Feb 21, 2020
0
253
The duck-billed hadrosaurs walked the Earth over 90-million years ago and were one of the most successful groups of dinosaurs. But why were these 2-3 tonne giants so successful? A new study, published in Paleobiology, shows ...
Archaeology
May 2, 2019
0
313
Ancient sea-floor dwellers are providing new clues about how mass extinctions steer life's evolutionary history, according to scientists.
Plants & Animals
Mar 29, 2019
1
127
An often cited claim that humans, who are smarter and more technologically advanced than their ancestors, originated in response to climate change is challenged in a new report by a Center for the Advanced Study of Human ...
Archaeology
Aug 4, 2017
9
921
A paleontologist at the Canadian Museum of Nature is countering decades of studies that assert that some dinosaurs can be identified as male or female based on the shapes and sizes of their bones.
Archaeology
Mar 29, 2017
0
16
How old were the oldest dinosaurs? This question remains largely unanswered. The natural life span of these long-extinct giants is of interest to scientists, in combination with questions regarding how fast they could grow ...
Archaeology
Feb 7, 2017
0
107
