Definitions for paleocene
ˈpeɪ li əˌsin; esp. Brit. ˈpæl i-pa·le·ocene

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Paleocene, Paleocene epochnoun

   from 63 million to 58 million years ago; appearance of birds and earliest mammals

WiktionaryRate this definition:0.0 / 0 votes

1. Paleocenenoun

   The Paleocene epoch.

2. Paleoceneadjective

   Of or pertaining to a geologic epoch within the Paleogene period from about 65 to 56 million years ago; marked by the rise of the first large mammals in a tropical climate.

WikipediaRate this definition:0.0 / 0 votes

1. Paleocene

   The Paleocene, ( PAL-ee-ə-seen, -⁠ee-oh-, PAY-lee-) or Palaeocene, is a geological epoch that lasted from about 66 to 56 million years ago (mya). It is the first epoch of the Paleogene Period in the modern Cenozoic Era. The name is a combination of the Ancient Greek παλαιός palaiós meaning "old" and the Eocene Epoch (which succeeds the Paleocene), translating to "the old part of the Eocene". The epoch is bracketed by two major events in Earth's history. The K–Pg extinction event, brought on by an asteroid impact (Chicxulub impact) and possibly volcanism (Deccan Traps), marked the beginning of the Paleocene and killed off 75% of species, most famously the non-avian dinosaurs. The end of the epoch was marked by the Paleocene–Eocene Thermal Maximum (PETM), which was a major climatic event wherein about 2,500–4,500 gigatons of carbon were released into the atmosphere and ocean systems, causing a spike in global temperatures and ocean acidification. In the Paleocene, the continents of the Northern Hemisphere were still connected via some land bridges; and South America, Antarctica, and Australia had not completely separated yet. The Rocky Mountains were being uplifted, the Americas had not yet joined, the Indian Plate had begun its collision with Asia, and the North Atlantic Igneous Province was forming in the third-largest magmatic event of the last 150 million years. In the oceans, the thermohaline circulation probably was much different from what it is today, with downwellings occurring in the North Pacific rather than the North Atlantic, and water density mainly being controlled by salinity rather than temperature. The K–Pg extinction event caused a floral and faunal turnover of species, with previously abundant species being replaced by previously uncommon ones. In the Paleocene, with a global average temperature of about 24–25 °C (75–77 °F), compared to 14 °C (57 °F) in more recent times, the Earth had a greenhouse climate without permanent ice sheets at the poles, like the preceding Mesozoic. As such, there were forests worldwide—including at the poles—but they had low species richness in regards to plant life, and were populated by mainly small creatures that were rapidly evolving to take advantage of the recently emptied Earth. Though some animals attained great size, most remained rather small. The forests grew quite dense in the general absence of large herbivores. Mammals proliferated in the Paleocene, and the earliest placental and marsupial mammals are recorded from this time, but most Paleocene taxa have ambiguous affinities. In the seas, ray-finned fish rose to dominate open ocean and recovering reef ecosystems.

ChatGPTRate this definition:0.0 / 0 votes

1. paleocene

   The Paleocene is a geological epoch that occurred approximately 66 - 56 million years ago, right after the end of the Cretaceous period and the extinction of non-avian dinosaurs. It is marked by the proliferation of mammals, marine and terrestrial flora, and the initial radiation of placental mammals. The Paleocene is the first epoch of the Paleogene period in modern classification systems.

WikidataRate this definition:0.0 / 0 votes

1. Paleocene

   The Paleocene or Palaeocene, the "early recent", is a geologic epoch that lasted from about 66 to 56 million years ago. It is the first epoch of the Palaeogene Period in the modern Cenozoic Era. As with most other older geologic periods, the strata that define the epoch's beginning and end are well identified but the exact date of the end is uncertain. The Paleocene Epoch immediately followed the mass extinction event at the end of the Cretaceous, known as the Cretaceous–Paleogene boundary, which marks the demise of non-avian dinosaurs, the giant marine reptiles and much other fauna and flora. The die-off of the dinosaurs left unfilled ecological niches worldwide. The name "Paleocene" comes from Greek and refers to the "old" "new" fauna that arose during the epoch.

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1. • Epoch

How to pronounce paleocene?

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Numerology

1. Chaldean Numerology

   The numerical value of paleocene in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of paleocene in Pythagorean Numerology is: 4

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=paleocene
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Paleocene
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Paleocene
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=paleocene