microfossils
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Bitter Springs microfossils — ▪ paleontology assemblage of microscopic fossil structures uncovered in the Bitter Springs Formation, a rock layer about 800,000,000 years old exposed in central Australia. Collections first made in 1965 revealed at least four general… … Universalium
Fig Tree microfossils — ▪ paleontology assemblage of microscopic structures uncovered in the Fig Tree Series, a rock layer at least three billion years old, exposed in South Africa. They apparently represent several organisms among the oldest known including a rod … Universalium
Gunflint microfossils — ▪ paleontology assemblage of microscopic fossils uncovered in the Gunflint Iron Formation, a rock layer about two billion years old exposed in western Ontario, Canada. The fossils include filamentous structures resembling blue green algae… … Universalium
Micropaleontology — Fusulinid (Triticites) from the Plattsmouth Chert, Red Oak, Iowa (Permian). Micropaleontology (also sometimes spelled as micropalaeontology) is the branch of paleontology that studies microfossils. Contents … Wikipedia
Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… … Universalium
Fossil — For other uses, see Fossil (disambiguation). Three small ammonite fossils, each approximately 1.5 cm across … Wikipedia
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
palynology — palynological /pal euh nl oj i keuhl/, adj. palynologically, adv. palynologist, n. /pal euh nol euh jee/, n. the study of live and fossil spores, pollen grains, and similar plant structures. [1940 45; < Gk palýn(ein) to sprinkle, scatter (akin to … Universalium
La Brea Tar Pits — (or Rancho La Brea Tar Pits) are a famous cluster of tar pits located in Hancock Park in the urban heart of Los Angeles, California, United States. Asphalt (colloquially termed tar, which in Spanish is termed brea , see below) has seeped up from… … Wikipedia
Phosphatic fossilization — has occurred in unusual circumstances to preserve some extremely high resolution microfossils in which careful preparation can even reveal preserved cellular structures. Such microscopic fossils are only visible under the scanning electron… … Wikipedia
quaternary — /kwot euhr ner ee, kweuh terr neuh ree/, adj., n., pl. quaternaries. adj. 1. consisting of four. 2. arranged in fours. 3. (cap.) Geol. noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era,… … Universalium
