Sentences with word «radiolarians»

As the seafloor moves slowly east, it slides under the North American continent and leaves behind scrapings of radiolarian chert and pillow basalt.

They compared isotope measurements on the silica skeletons of diatoms, which store environmental signals from the ocean's surface, with isotope signals from radiolarians, which live in deeper water layers.

At left, a large Thalassicolanucleata radiolarian with a central capsule enclosing the nucleus.

At right, a colonial collodarian radiolarian comprised of many individual cells, each with a central capsule, sharing a common jelly.

Then they sequenced the DNA and compared the results to known foraminifera and radiolarian DNA sequences.

Roger lovingly describes radiolarians, some of which build skeletons of strontium sulfate while others manage to eat multicelled animals.

Their analysis showed they'd found 169 foraminifera species and 21 radiolarian species, many of which were unknown.

The addition of new collectables in the form of Lost Prophecy verses / Radiolarian Cultures maintain Destiny's insistence on more currency to track.

The Changhsingian (latest Permian) Dalong Formation is composed of grayish - black cherty beds and cherty mudstone with deep - water assemblages including the bivalve Hunanopecten sp., ammonoid Pseudotirolites sp. and radiolarian Flustrella sp. 56.

The sea cliffs and road cuts of the Headlands have exposed some of the finest examples of pillow basalt and radiolarian chert.

Objects with icosahedral symmetry occur in nature only at microscopic scales, including quasicrystals, many viruses and some beautiful protozoa in the radiolarian family

The researchers used special pieces of DNA specific to radiolarians and foraminifera to fish out DNA from those groups.

The researchers were after genetic material from two related groups of marine organisms, the foraminifera and the radiolarians.

The black pillow basalt was created from lava spewing from vents, while the red - brown radiolarian chert formed as the remains of radiolarians (microscopic protozoans) collected in layers.

At any rate, when «normal» rain containing natural carbonic acid falls upon silicon - containing sedimentary rocks formed over eons from the shells of tiny marine creatures — radiolarians, diatoms and some sponges — this «siliceous» rock combines with the carbonic acid to form ions of bicarbonate.