Additionally, nineteen carbonate rock samples, at approximately 1-m intervals, were collected from limestone beds of the Vergale-50 drill core above and below the Collector for micropalaeontological analysis based on ostracods
. These samples were disintegrated using sodium hyposulphite with repeated heating and cooling (Meidla 1996).
Based on chemical-bituminological studies, the TOC content in the samples of Khadum and Batalpashin sediments varies between 0.26% for the Pshekh limestone in well Dovsunskaya-4 and 8.35% for the ostracod
horizon clays in well Emelyanovskaya-1.
The subject of the new study -- the ostracods
-- are probably not engaging in any form of display, but manifesting what the biologists call sperm competition.
The US-based researchers looked at 93 species of extinct ostracods
that lived about 85 million to 65 million years ago during the late Cretaceous period.
Siveter (1989) assigned a Pridoli age to the basal portions of the Eastport Formation based on the presence of the ostracod
Temperature played a vital role in the ostracod
After corning and comporting big fractions of sediments (particles higher than 125 micron), 50 g of samples were countered in order to investigate the Ostracodes
existed in sediments.
and associated marine animals living there were covered by a fall of volcanic ash that preserved them frozen in time.
Many groups of organisms including cnidarians, ctenophores, radiolarians, shrimp, ostracods
, squid, chaetognaths, ophiuroids, larvaceans, and deep-sea fishes produce light by oxidizing coelenterazine, although each organism makes its own luciferase to catalyze the reaction (Shimomura, 2006; Haddock et al., 2010).
The bug is a type of ostracod
, which belongs to the same group of animals as water fleas and shrimps.
The wells have encountered pay in the Ellerslie and Ostracod
formations, with one of the wells making a successful follow up of the prolific Ostracod
channel drilled in 2008.
was initially reported from epiphytic bromeliads in Puerto Rico, and was later found in epiphytic bromeliads in Collier County, Florida (Tressler 1956).