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Index fossils must have a short vertical range, wide geographic distribution and rapid evolutionary trends. Another term, "zone fossil", is used when the fossil has all the characters stated above except wide geographical distribution; thus, they correlate the surrounding rock to a biozone rather than a specific time period.
Fossil material of a giant titanosaur sauropod, distinct from Andesaurus and probably exceeding Patagotitan in size, is described from the Cenomanian Candeleros Formation by Otero et al. (2021). [241] Revision of known fossil material of Pellegrinisaurus powelli and a study on the skeletal anatomy, bone histology and phylogenetic relationships ...
This list of fossil sites is a worldwide list of localities known well for the presence of fossils. Some entries in this list are notable for a single, unique find, while others are notable for the large number of fossils found there.
An early Campanian assemblage of anuran bones, suggestive of high local species richness of frogs, is described from the Aguja Formation (Texas, United States) by Wick (2021). [174] Fossil material of Late Cretaceous frogs, including fossils of calyptocephalellid frogs and the southernmost record of pipids (Kuruleufenia) worldwide reported to ...
Download as PDF; Printable version; ... Pages in category "Fossil taxa described in 2021" ... Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
Paleontology (/ ˌ p eɪ l i ɒ n ˈ t ɒ l ə dʒ i, ˌ p æ l i-,-ən-/ PAY-lee-on-TOL-ə-jee, PAL-ee-, -ən-), also spelled palaeontology [a] or palæontology, is the scientific study of life that existed prior to the start of the Holocene epoch (roughly 11,700 years before present).
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[1]: 230 A rock unit has a characteristic assemblage of fossils, independent of its lithology. [1]: 229 Thus, the fossils can be used to compare the ages of different rock units. The basic unit of biochronology is the biostratigraphic zone, or biozone, a collection of fossils found