kenozooiselta

Kenozooiselta refers to the most recent geological epoch in the Earth's history, spanning from approximately 2.58 million years ago to the present day. This epoch is part of the Quaternary Period and follows the Neogene Period. The term "Kenozooiselta" is not a widely recognized or standardized geological term; however, it appears to be a non-standard or potentially misspelled variation of "Quaternary" or "Quaternary Period," which is the correct designation for this geological interval.

The Quaternary Period is characterized by significant climatic fluctuations, including multiple glacial and interglacial cycles. These cycles have profoundly influenced global ecosystems, human evolution, and the distribution of flora and fauna. The period is further divided into two epochs: the Pleistocene, which lasted until about 11,700 years ago, and the Holocene, which extends to the present. The Holocene is notable for its relatively stable climate compared to the Pleistocene, facilitating the development of modern human civilizations.

During the Quaternary, significant evolutionary changes occurred, including the emergence of modern humans (*Homo sapiens*) and the extinction of many large mammals, often referred to as megafauna. Human activities during this epoch have had a growing impact on the environment, leading to widespread deforestation, species extinction, and climate change. The Quaternary Period is also marked by the rise of agriculture, the development of cities, and the spread of industrialization, all of which have reshaped the planet's landscape and ecosystems.