chronostratigraphic scale
chronostratigraphic scale (chronostratic scale) Ideally, a time scale in which the sequence of geologic-time units and their corresponding time-rock divisions (chronostratigraphic units) are defined by standard and internationally agreed reference points within boundary stratotypes. In practice, boundary stratotypes have been agreed only for parts of the scale and the chronostratigraphic units within it continue to be defined by biostratigraphic means. See STANDARD STRATIGRAPHIC SCALE; and STRATIGRAPHIC SCALE.
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Scale , scale1 / skāl/ • n. 1. each of the small, thin horny or bony plates protecting the skin of fish and reptiles, typically overlapping one another. 2. s… Cosmoid Scale , Skip to main content
cosmoid scale scale insect , scale in·sect • n. a small insect (suborder Homoptera) with a protective shieldlike scale. It spends most of its life attached by its mouth to a sing… Scale (zoology) , scales The small bony or horny plates forming the body covering of fish and reptiles. The wings of some insects, notably the Lepidoptera (butterflies… Magnetostratigraphy , magnetostratigraphic time-scale (polarity time-scale, geomagnetic reversal time-scale, reversal time-scale) A time-scale based on the periodic polari… Placoid Scale , Skip to main content
placoid scale
placoid scale (dermal centicle) A type of scale that comprises the basic unit of the hard skin cover of sharks. It…
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chronostratigraphic scale