The bioclastic and peloidal facies (F8B) is arranged in decimeter to meter thick massive beds (up to 1 m thick), and is composed of poorly--to very poorly-sorted bioclasts (fragments of charophytes, ostracods
, gastropods, ostreids and other bivalves up to 4 cm in size, and scarce echinoderms, small agglutinated forams, small miliolids, and millimeter-scale vertebrate remains; Fig.
The only other items contributing more than 3% volume included adult beetles, spiders, and millipedes for large salamander larvae and chironomid larvae, ostracods
, and spiders for small salamander larvae.
Invertebrates consisted of a variety of groups including micro-crustaceans (copepods, ostracods
, and Daphnia), red swamp crayfish (Procambarus clarki), Corbiculidae (Corbicula fluminea), tapeworms, dipteran larvae and adults, Notonectidae, and odonate nymphs and adults.
are referred to as "seed shrimps" because of their shape and small size.
Nwadiaro & Okorie (1987) reported chaoborid and chironomid larvae, ostracods
, copepods and detritus as the food items of C.
According to Dias-Brito et al., (2001) the Adamantina formation's fossil sediments are primarily represented by vertebrates (remains of crocodylomorphs, dinosaurs, turtles, frogs, fish, snakes), plants (Charophyta) and molluscs (conchostraceans and ostracods
Like water-fleas and shrimps, ostracods
belong to the group of animals called Crustacea.
and Quaternary paleoenvironments.
Other species located above and below the boundary include Physa, "Hydrobia," Acroloxus?, New Genus A limneaformis, opercula specimens, and ostracods
. Quitting Time has abundant examples of Sphaerium beckmani, S.
The prey of Hydroporus signatus includes highly mobile ostracods
Observations on swimming, posture and buoyancy in the giant oceanic ostracods
, Gigantocypris mulleri and Macrocypridina castanea.
As single-celled organisms, it is difficult for protists to move on land, but some make their homes in moist terrestrial areas as in the soil and beneath fallen leaves, so it is not surprising that yeast, ostracods
and other organisms can live in humid moss or periostracum.