[
US
/ˌpeɪɫiəˈzoʊɪk/
]
NOUN
- from 544 million to about 230 million years ago
ADJECTIVE
- of or relating to or denoting the Paleozoic era
How To Use Paleozoic In A Sentence
- The search for the rootstock of the decapod Crustacea has resulted in the discovery of numerous Paleozoic organisms that bear some similarity to Mesozoic and Cenozoic shrimp, lobsters, and crabs.
- Paleozoic synapsids have been the focus of many large-scale treatments over the past century and their anatomy and interrelationships are well known.
- The lithologic mosaic is distinct from the Paleozoic rocks of Ecoregion 36 and the strictly Quaternary deposits of Ecoregion 73. Ecoregions of Arkansas (EPA)
- Carbonate-rich Paleozoic bedrock characterizes the geology of the Mixedwood Plains.
- Among crustacea, it is very remarkable that trilobites and limulus-like forms are the only representatives of the class during the paleozoic ages; that macrourans prevailed in the same manner during the secondary period; and that brachyurans make their appearance only in the tertiary period. Louis Agassiz His Life and Correspondence
- The dissolution of limestones in weak acid is now a standard palaeontological laboratory technique, and has been used extensively to isolate phosphatic microfossils of all types from Paleozoic carbonates.
- In the northern Cordillera lower Paleozoic alkalic and potassic mafic magmatism is linked with rifting of the Selwyn Basin.
- Cephalopods were among the most highly developed animals and the topmost predators in the free water column during long intervals of the Paleozoic.
- The folded Ouachita Mountains (36) are underlain by Paleozoic sandstone, shale, and chert and mostly covered by pine – upland hardwood forests. Ecoregions of Oklahoma (EPA)
- Sphenothallus Hall, 1847 is a widespread Paleozoic marine taxon that has been interpreted most recently as a tubiculous annelid or other ‘worm’ or as a thecate hydrozoan or scyphozoan cnidarian.