Carboniferous

How To Use Carboniferous In A Sentence

• The northern margin of the melange is marked by a thrust contact with both the Carboniferous sedimentary rocks and extrusive volcanic sequence.
• Most coal fields began life as swamps about 300 million years ago in the Carboniferous period.
• It is thus unlikely that the bulk of the Carboniferous detritus could have been derived by recycling of preexisting Silurian sandstones.
• The idea that cycads stem from Carboniferous so-called pteridosperms (‘seed ferns’ or seed plants with fern-like foliage) has long been popular with paleobotanists.
• Carboniferous and Permian strata often contain useful index fossils belonging to this group.
• The first was the incumbent wetland flora with origins in the early Carboniferous.
• The great lycopod and cordaite trees of the Carboniferous and Permian were long gone, although smaller lycopods survived.
• Carboniferous and Permian strata often contain useful index fossils belonging to this group.
• Uplift of this magnitude could have occurred during Hercynian times with the stripping of considerable amounts of Carboniferous overburden.
• Many Devonian species differ from Early Carboniferous species in having quadrate rather than cuneate brachials and in having straight-sided rather than zigzag arms.