Definition of Palaeozoic in English:


(US Paleozoic)


  • 1Relating to or denoting the era between the Precambrian aeon and the Mesozoic era.

    • ‘Cliffs forming the margins of rifts are thought to have developed in this way, with retreat occurring since the Late Cretaceous in Precambrian to Palaeozoic rocks.’
    • ‘In addition to the dominant Precambrian and Paleozoic rocks, there are small deposits of Mesozoic rocks on the island as well.’
    • ‘Under a thin Jurassic conglomerate a Palaeozoic succession of interbedded reddened sandstone, mudstone and basalt was preserved.’
    • ‘Pre-Aptian structure reflects both Palaeozoic rifting and Mesozoic modification.’
    • ‘The Anatolian region has been formed by the amalgamation of smaller continental fragments that were formerly sited at the northern margin of Gondwana during late Palaeozoic and early Mesozoic times.’
    • ‘This tectonostratigraphy contains metamorphic rocks of both early Palaeozoic and Precambrian age with metamorphic grade generally increasing to the west.’
    • ‘This idea is difficult to test, because data on Palaeozoic and Precambrian facies trends and structures are limited.’
    • ‘Rocks of late Precambrian and early Paleozoic age have yielded a variety of tiny spine-like fossils of dominantly organic or weakly phosphatic composition.’
    • ‘To the west of Siberia is the very large early Mesozoic and later Western Siberian Basin, which covers the Palaeozoic rocks and their sutures.’
    • ‘The studied sequence at the transition to the axial zone in NE Sardinia is estimated to have a Precambrian to Palaeozoic age.’
    1. 1.1The Palaeozoic era or the system of rocks deposited during it.


Mid 19th century: from palaeo- + Greek zōē life + -ic.