- The
Cretaceous–Paleogene (K–Pg)
extinction event, also
known as the
Cretaceous–Tertiary (K–T) extinction, was a
sudden m****
extinction of three-quarters...
- 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...
- 19th century, a
significant amount of
research has been
conducted on the
Cretaceous–Paleogene
extinction event, the m****
extinction that
ended the dinosaur-dominated...
-
umbrella term
covering humic acid,
fulvic acid,
humin and
hymatomelanic acid which differ in solubility. By definition,
humic acid is
soluble in
water at neutral...
-
Fossils are
known since Aptian of the
Early Cretaceous, with
several described species from
Cretaceous amber.
German wasp
Median wasp nest
Polistes nest...
- 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...
- in the
Early Cretaceous,
about 200
million years after the
oldest amber know to date, and they were not
common until the Late
Cretaceous.
Amber becomes...
- 410 million years.
Coelacanths were
thought to have
become extinct in the Late
Cretaceous,
around 66 million
years ago, but were
discovered living off the coast...
- reason, the
unusually high
abundance of
iridium in the clay
layer at the
Cretaceous–Paleogene
boundary gave rise to the
Alvarez hypothesis that the impact...
- Jonas; Str****er, André (26
November 2005). "Origin of
peloids in
Early Cretaceous deposits, Dorset,
South England" (PDF). Facies. 51 (1–4): 264–274. Bibcode:2005Faci...
