Reef builders adapted to the changing environment. Evolution led to greater biodiversity of the reef community. From the Devonian to the present day, the scale of reef building has increased, despite periods of decline. The number of reef builders involved also grew. ...
Fossil reefs: their origin, development, global distribution, periods of decline and resurgence of reef formation. Throughout different eras, many creatures—from archaeocyaths and sponges to scleractinians—served as reef builders, succeeding one another throughout evolution. ...
Early tetrapod trackways are rare, with few confirmed footprints from the first four-legged animals. Further research has not upheld initial claims linking some tracks to Devonian tetrapods. They may be natural formations or from different animals. Consider these cases. ...
Devonian tetrapod trackways from the Genoa River, Valentia Island, and Tarbat Ness provide the most important evidence for the global distribution of early tetrapods. These findings complement those at Zachełmie by demonstrating the conditions for tetrapods to reach land. ...
The discovery of Devonian tetrapod tracks is rare but significant. They push the appearance of tetrapods further back in time. Of the four confirmed finds in Laurussia and Gondwana, the footprints from Zachełmie (Poland) are the earliest. ...
The discovery of very early tetrapod tracks disrupts previously established hypotheses and forces a reconsideration of the evolutionary timeline. These tracks are older than the fossil remains of the presumed ancestors of tetrapods—elpistostegids. ...
The statues of funny dinosaurs in the city park bring to life the myths of a long-gone ancient era, when real dinosaurs shook the earth with their heavy footsteps and truly ruled this world. Their distant winged descendants continue to remind us of that distant mythological age. ...
The mass extinction was not a simple and rapid process that occurred under the influence of any one cause. Some animals disappeared even before the end of the Cretaceous; others were already in clear decline, but many ceased to exist precisely at the K/T boundary. ...
The asteroid hypothesis alone does not explain the dinosaur extinction. Asteroids have repeatedly collided with Earth throughout its history, leaving craters behind. Some of them are larger than Chicxulub. The Deccan Traps also played their role. ...
The extinction of dinosaurs was part of the mass extinction that occurred at the Cretaceous-Paleogene boundary. It affected all continents and wiped out many groups of animals. Researchers explain it by various causes and the effects of several mechanisms of destruction. ...
