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Here the units are sorted by the number of genera that have been reported as being represented in their respective fossil yields. Since the creation or synonymy of genera can be subjective, the sorting of the units can only roughly approximate their known paleobiodiversities.
The Ahvaytum fossil material was discovered in 2013 in outcrops of the lower Popo Agie Formation (Garrett's Surprise locality) in west-central Wyoming, United States. [1] [2] The holotype specimen, UWGM 1975, is an isolated left astragalus.
Guenser et al. (2025) report evidence of concentration of research on the fossil record of stylophorans in the higher-income countries, regardless of the origin of the studied fossil material, throughout the history of the study of this group, including evidence that the majority of studies on fossils from the Global South published between ...
Magnetofossils are the fossil remains of magnetic particles produced by magnetotactic bacteria (magnetobacteria) and preserved in the geologic record. The oldest definitive magnetofossils formed of the mineral magnetite come from the Cretaceous chalk beds of southern England, while magnetofossil reports, not considered to be robust, extend on Earth to the 1.9-billion-year-old Gunflint Chert ...
A study on the evolution of the columellar folds in gastropods, based on data from extant and fossil taxa, is published by Vermeij (2025). [ 10 ] A study on the diversity of Permian and Triassic gastropods is published by Dominici (2025), who interprets increase of diversity of carnivorous gastropods durign the Middle-Late Triassic transition ...
The fossil record and faunal succession form the basis of the science of biostratigraphy or determining the age of rocks based on embedded fossils. For the first 150 years of geology , biostratigraphy and superposition were the only means for determining the relative age of rocks.
The chimpanzee–human divergence likely took place around 10 to 7 million years ago. [1] The list of fossils begins with Graecopithecus, dated some 7.2 million years ago, which may or may not still be ancestral to both the human and the chimpanzee lineage.
Scholars have frequently used in textual analogies such as 'record', 'source' and 'archive' to refer to material evidence of the past since at least the 19th century. The term 'archaeological record' probably originated this way, possibly via parallel concepts in geology (geologic record) or palaeontology (fossil record). [5]