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Coniferopsida

Coniferopsida In some classifications, a class of gymnosperms, comprising 4 orders: Cordaitales; Coniferales (conifers); Ginkgoales (ginkgos); and Taxales (yews). The Cordaitales appeared in the early Carboniferous and became extinct at the end of the Permian. The Coniferales appeared in the Upper Carboniferous, the Ginkgoales in the early Permian, and the Taxales in the Jurassic. These three are extant.

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"Coniferopsida." A Dictionary of Earth Sciences. . Encyclopedia.com. 18 Aug. 2017 <http://www.encyclopedia.com>.

"Coniferopsida." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/coniferopsida

"Coniferopsida." A Dictionary of Earth Sciences. . Retrieved August 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/coniferopsida

Coniferopsida

Coniferopsida In some classifications, a subdivision of the gymnosperms, comprising 4 orders, the oldest of which, the Cordaitales, appeared in the Carboniferous. They became extinct at the end of the Permian, but their place was taken by 2 other coniferopsid orders: the Ginkgoales (ginkgos) and Coniferales (conifers). These are now usually ranked as divisions, the Ginkgophyta and Coniferophyta.

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"Coniferopsida." A Dictionary of Plant Sciences. . Encyclopedia.com. 18 Aug. 2017 <http://www.encyclopedia.com>.

"Coniferopsida." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 18, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/coniferopsida-0

"Coniferopsida." A Dictionary of Plant Sciences. . Retrieved August 18, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/coniferopsida-0