The presence of trace elements in brachiopod
shells was reported by Jope (1965) and included Fe, Mg, Mn and Cu.
dominated many undersea communities at that time.
and species appearing for the first time in the Moe or Adila formations: new species among tabulate and rugose corals, brachiopods
Leptaena multirugosa Roomusoks, Geniculina pseudoaltemata (Schmidt), Luhaia vardi Roomusoks, and Platystrophia humilis Oraspold, trilobites Atractopyge vardiana Mannil, Scotoharpes costatus (Angelin), and Pseudosphaerexochus roemeri Schmidt.
Crinoid, Bivalve, Brachiopod
, Fusulinid, Bryozoanal Calcareous Sandstone Facies (MF9): This facies is 3.
The appearance of brachiopod
shells is similar to that of bivalves; however, brachiopods
are different anatomically from bivalves and are considered to be unrelated evolutionarily to Mollusca (Pennington & Stricker 2001).
27 species f rom 13 genera regarding Late Permian brachiopod
s were recognized in the present research work, Theost significant brachiopod
families, in terms of frequency and variety, included Productida, Strophomenida, Rhynconellida and Athyris.
are numerous and well preserved there, making them an ideal group of animals to test the link between abundance and extinction.
1-2), while shell layers from organo-phosphatic brachiopods
exhibit a concentric accretionary pattern and sometimes a porous or granular texture (Fig.
Latest Albian (Vraconian) brachiopod
fauna North Dobrogea (Romania): Taxonomy, palaeoecology and palaeobiogeography.
in the Maxville Limestone have a common and varied epibiont fauna present on the shells (Hoare, 2003).
Although the systematic position of that brachiopod
is uncertain, its shell structure is of interest as it differs from those of the other Cambrian lingulate brachiopods
identified in the same region.
Criteria Taxa n Size Complex morphology Black coral 135 X X (Antipathes dendrochristos) Flat sponge 4240 X Barrel sponge 2138 X Vase sponge 1167 X Sea pen 9726 X (Subselliflorae) Basket star (Gorgonocephalus eucnemis) 733 X X White-plumed anemone 57 X (Metridium farcimen) Foliose sponge 1259 X Shelf sponge 139 X Gorgonian 27 X (Gorgonacea) Crinoid 174,231 X (Florometra serratissima) Brittle star (Ophiuridae) 207,667 Fragile sea urchin 18,363 (Allocentrotus fragilis) White sea urchin 45,092 (Lytechinus anamesus) Brachiopod
56,924 (Order Terebratulida) Density (no.
fragments have been found in preserved stomach contents of Janassa (Petalodontidae) and Fadenia (Caseodontidae) (Moy-Thomas and Miles, 1971).
A contribution to the life-history of the brachiopod
Terebratella inconspicua Sowerby.
At this stratigraphic level a very interesting brachiopod
fauna occurs that contains, in addition to typical elements of the Guadalupian Maokou Formation such as Unisteges maceus (Ching) and Orthotichia nana (Grabau), typical and common elements of the Lopingian Longtan Formation, such as Cathaysia chonetoides (Chao), Haydenella wenganensis (Huang), Leptodus nobilis (Waagen), Neochonetes substrophomenoides (Huang), Tschernyschewia sinensis Chao, and Tyloplecta yangtzeensis (Chao).