Lower Carboniferous period
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Lower Carboniferous period — noun from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects • Syn: ↑Mississippian, ↑Missippian period, ↑Lower Carboniferous • Instance Hypernyms: ↑period, ↑geological period … Useful english dictionary
Carboniferous period — noun from 345 million to 280 million years ago • Syn: ↑Carboniferous • Derivationally related forms: ↑carboniferous (for: ↑Carboniferous) • Instance Hypernyms: ↑period, ↑ … Useful english dictionary
Lower Carboniferous — noun from 345 million to 310 million years ago; increase of land areas; primitive ammonites; winged insects • Syn: ↑Mississippian, ↑Missippian period, ↑Lower Carboniferous period • Instance Hypernyms: ↑period, ↑geological period … Useful english dictionary
Carboniferous Period — Interval of geologic time 354–290 million years ago, marked by great changes in world geography. All the landmasses drew closer together as a result of tectonic plate movements. The supercontinent Gondwana occupied much of the Southern Hemisphere … Universalium
carboniferous — [kär΄bə nif′ər əs] adj. [ CARBON + I + FEROUS] 1. producing or containing carbon or coal 2. [usually C ] designating or of the fifth geologic period of the Paleozoic Era, subdivided into the Pennsylvanian (the Upper Carboniferous) and the… … English World dictionary
Carboniferous — For the album by Zu see Carboniferous (album). Carboniferous Period 359.2–299 million years ago … Wikipedia
lower vascular plant — ▪ biology Introduction formerly pteridophyte, also called vascular cryptogam, any of the spore bearing vascular plants, including the ferns, club mosses, spike mosses, quillworts, horsetails, and whisk ferns. Once considered of the… … Universalium
Carboniferous — /kabəˈnɪfərəs / (say kahbuh nifuhruhs) adjective 1. relating to a geological period or a system of rocks preceding the Permian, and following the Devonian; divided into Upper Carboniferous, Lower Carboniferous, and sometimes Middle Carboniferous …
Carboniferous — 1. adjective of a geologic period within the Paleozoic era; comprises the lower, middle and upper Mississippian and lower, middle and upper Pennsylvanian epochs from about 345 to 280 million years ago, when coal was laid down 2. noun … Wiktionary
geological period — noun a unit of geological time during which a system of rocks formed ganoid fishes swarmed during the earlier geological periods • Syn: ↑period • Hypernyms: ↑geological time, ↑geologic time • Hyponyms: ↑ice age, ↑ … Useful english dictionary
