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“paleozoic”
Paleozoic, Palaeozoic (adjective), more Paleozoic, most Paleozoic
Relating to the geologic era extending from the end of the Precambrian to the beginning of the Mesozoic: The Paleozoic period, formally termed "Primary", dates from about 542 to 250 million years ago, from the era of trilobites to those of the reptiles.
This entry is located in the following units:
palaeo-, palae-, paleo-, pale-
(page 4)
zoo-, zoa-, zo-, -zoic, -zoid, -zoite, -zoal, -zonal, -zooid, -zoon, -zoa, -zoan
(page 8)
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“paleozoic”
paleozoic (literally, "ancient life")
The geological era that extends from the dawn of the modern phyla in the Cambrian (about 570 million years ago) to the end of the Permian (about 245 million years ago).
This entry is located in the following unit:
Ocean and Deep Sea Terms
(page 4)