The Cretaceous–Paleogene (K–Pg) boundary, formerly known as the Cretaceous–Tertiary (K–T) boundary, is a geological signature, usually a thin band of rock...
30 KB (3,118 words) - 12:49, 9 June 2025
The Cretaceous–Paleogene (K–Pg) extinction event, formerly known as the Cretaceous-Tertiary (K–T) extinction event, was the mass extinction of three-quarters...
200 KB (22,036 words) - 19:07, 24 July 2025
The climate across the Cretaceous–Paleogene boundary (K–Pg or formerly the K–T boundary) is very important to geologic time as it marks a catastrophic...
23 KB (3,148 words) - 11:48, 8 June 2025
the Gulf of Mexico. The end of the Cretaceous is defined by the abrupt Cretaceous–Paleogene boundary (K–Pg boundary), a geologic signature associated with...
96 KB (9,996 words) - 10:05, 27 July 2025
of the world, known as the Cretaceous–Paleogene boundary (K–T boundary). K is the traditional abbreviation for the Cretaceous Period derived from the German...
18 KB (1,694 words) - 08:48, 1 July 2025
Chicxulub crater (category Cretaceous–Paleogene boundary)
date of the impact coincides with the Cretaceous–Paleogene boundary (commonly known as the K–Pg or K–T boundary). It is now widely accepted that the devastation...
85 KB (8,270 words) - 09:24, 15 July 2025
century, a significant amount of research has been conducted on the Cretaceous–Paleogene extinction event, the mass extinction that ended the dinosaur-dominated...
120 KB (12,558 words) - 19:46, 5 July 2025
Nadir crater (category Cretaceous–Paleogene boundary)
diameter, and formed around 66 million years ago, close to the Cretaceous–Paleogene boundary when a small asteroid struck the ocean floor. The crater features...
6 KB (665 words) - 17:59, 9 March 2025
by an asteroid impact, and is associated with the Cretaceous–Paleogene extinction event. The boundary is defined as the rusty colored base of a 50 cm thick...
69 KB (7,558 words) - 23:35, 26 July 2025
Paleobiota of the Hell Creek Formation (category Cretaceous–Paleogene boundary)
T.; Field, D.J. (2011). "Mass extinction of birds at the Cretaceous–Paleogene (K–Pg) boundary". Proceedings of the National Academy of Sciences. 108 (37):...
171 KB (8,877 words) - 22:38, 26 July 2025
Boltysh crater (category Cretaceous–Paleogene boundary)
the Cretaceous–Paleogene boundary (K–Pg boundary). The Chicxulub impact is believed to have caused the mass extinction at the end of the Cretaceous period...
8 KB (938 words) - 09:32, 24 June 2025
extinct due to volcanic activity around 350,000 years before the Cretaceous–Paleogene boundary. R. Lydekker. (1877). Notices of new and other Vertebrata from...
22 KB (2,429 words) - 22:27, 28 July 2025
the Australobatrachia, during the mid-Cretaceous. The fossil evidence found during the Cretaceous-Paleogene extinction event could not determine the...
13 KB (1,397 words) - 21:36, 26 April 2025
Deccan Traps (category Cretaceous–Paleogene boundary)
spanning the Cretaceous–Paleogene boundary. While some authors have suggested that the eruptions were the primary cause of the Cretaceous–Paleogene mass extinction...
32 KB (3,638 words) - 04:28, 17 July 2025
sanjuanensis have been recovered from only a few meters below the Cretaceous-Paleogene boundary in Texas, making it among the last surviving non-avian dinosaur...
46 KB (4,928 words) - 14:22, 26 July 2025
Shiva crater (category Cretaceous–Paleogene boundary)
500-kilometre-wide (310 mi) impact crater, that formed around the Cretaceous-Paleogene boundary. Chatterjee and colleagues have claimed that this could have...
11 KB (1,230 words) - 15:39, 24 May 2025
unusually high abundance of iridium in the clay layer at the Cretaceous–Paleogene boundary gave rise to the Alvarez hypothesis that the impact of a massive...
81 KB (7,834 words) - 13:04, 14 July 2025
Hell Creek Formation (category Paleogene Montana)
prolonged freeze. The famous iridium-enriched Cretaceous–Paleogene boundary, which separates the Cretaceous from the Cenozoic, occurs as a discontinuous...
46 KB (4,610 words) - 13:49, 24 July 2025
epoch, and are the only dinosaur lineage known to have survived the Cretaceous–Paleogene extinction event approximately 66 mya. Dinosaurs can therefore be...
275 KB (28,143 words) - 22:21, 27 July 2025
Maastrichtian (category Late Cretaceous)
Stage is defined to be at the iridium anomaly at the Cretaceous–Paleogene boundary (K–Pg boundary), which is also characterised by the extinction of many...
20 KB (1,824 words) - 20:46, 4 July 2025
and most richly fossiliferous sequence of beds spanning the Cretaceous-Paleogene boundary in any single sedimentary basin in the world. These include...
15 KB (1,650 words) - 23:20, 17 July 2025
Tremp Formation (category Upper Cretaceous Series of Europe)
Maastrichtian to Thanetian, thus the formation includes the Cretaceous-Paleogene boundary that has been well studied in the area, using paleomagnetism...
109 KB (9,725 words) - 02:05, 4 July 2025
Alvarez hypothesis (category Cretaceous–Paleogene boundary)
the non-avian dinosaurs and many other living things during the Cretaceous–Paleogene extinction event was caused by the impact of a large asteroid on...
21 KB (2,447 words) - 14:36, 25 July 2025
Trinidad Lake State Park (redirect from Trinidad K-T Boundary Natural Area)
the coal mining ruins at Cokedale. An exposure of the Cretaceous–Paleogene boundary (K–Pg boundary) is visible in the southern part of the park. A portion...
2 KB (125 words) - 02:04, 19 July 2025
Paleocene (category Paleogene geochronology)
"The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary" (PDF). Science. 327 (5970): 1214–1218. Bibcode:2010Sci...327...
156 KB (17,564 words) - 10:22, 15 July 2025
wrought by large errors in geomagnetic reversal timing around the Cretaceous–Paleogene boundary, and that a recalibration of the time scale shows no such acceleration...
14 KB (1,566 words) - 16:36, 4 June 2025
Lopez de Bertodano Formation (category Cretaceous–Paleogene boundary)
to 65.5 million years ago, straddling the Cretaceous-Paleogene boundary. The Cretaceous–Paleogene boundary (K–Pg) crops out on Seymour Island in the upper...
58 KB (3,593 words) - 23:50, 7 July 2025
Raton Formation (category Paleogene Colorado)
rocks spanning the Cretaceous-Paleogene boundary, it has been studied for evidence of a large meteor impact at the end of the Cretaceous that is thought...
8 KB (801 words) - 19:34, 20 June 2025
Hornerstown Formation (category Cretaceous–Paleogene boundary)
direct evidence of the mass mortality that occurred at the Cretaceous-Paleogene boundary. Outcrops of the Hornerstown Formation are known from sites...
26 KB (1,235 words) - 04:37, 15 June 2025
fossils and provide amongst the best on-land evidence of the Cretaceous–Paleogene boundary in marine sediments in the Southern Hemisphere. Ward Beach has...
23 KB (2,181 words) - 22:25, 14 July 2024