scholarly journals Stratigraphy and brachiopod fauna of the Carboniferous El Imán Formation, Colombia

2021 ◽  
Vol 18 (2) ◽  
pp. 151
Author(s):  
Lucia Angiolini ◽  
Patrick R. Racheboeuf ◽  
Carlos A. Villarroel ◽  
Ana Elena Concha
Keyword(s):  
Brachiopod Fauna

Kissinella-Christiania Associations in the early Ashgill Foliomena brachiopod fauna of South China

Lethaia ◽  
1994 ◽  
Vol 27 (1) ◽  
pp. 19-28 ◽  
Author(s):  
RONG JIA-YU ◽  
DAVID A.T. HARPER ◽  
ZHAN REN-BIN ◽  
LI RONG-YU
Keyword(s):  
South China ◽  
Brachiopod Fauna

A late Changhsingian (latest Permian) deep-water brachiopod fauna from Guizhou, South China

2009 ◽  
Vol 33 (2) ◽  
pp. 163-183 ◽  
Author(s):  
Zhong-Qiang Chen ◽  
G. R. Shi ◽  
Yongqun Gao ◽  
Jinnan Tong ◽  
Fengqing Yang ◽  
...  
Keyword(s):  
South China ◽  
Deep Water ◽  
Brachiopod Fauna

A late Cisuralian (early Permian) brachiopod fauna from the Taungnyo Group in the Zwekabin Range, eastern Myanmar and its biostratigraphic, paleobiogeographic, and tectonic implications

2021 ◽  
pp. 1-31
Author(s):  
Hai-peng Xu ◽  
Kyi Pyar Aung ◽  
Yi-chun Zhang ◽  
G.R. Shi ◽  
Fu-long Cai ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Cold Water ◽  
Water Environment ◽  
Climatic Conditions ◽  
Early Permian ◽  
The North ◽  
Southern Thailand ◽  
Brachiopod Fauna ◽  
Insight Into ◽  
Different Parts

Abstract The tectonic evolution of the Sibumasu Block during the Permian remains controversial, and Permian faunas and their paleobiogeographic affinities provide some insight into its paleogeographic and tectonic evolutionary histories. In this paper, a new brachiopod fauna dominated by Spinomartinia prolifica Waterhouse, 1981 is described from the uppermost part of the Taungnyo Group in the Zwekabin Range, eastern Myanmar. This brachiopod fauna includes 23 species and its age is well constrained as late Kungurian by the associated conodonts, i.e., Vjalovognathus nicolli Yuan et al., 2016 and Mesogondolella idahoensis (Youngquist, Hawley, and Miller, 1951), contrary to the late Sakmarian age given to the same brachiopod faunas previously reported from southern Thailand and Malaysia. Based on comprehensive comparisons of the Cisuralian brachiopod faunas and other data in different parts of the Sibumasu Block, we consider that they are better subdivided into two independent stratigraphic assemblages, i.e., the lower (earlier) Bandoproductus monticulus-Spirelytha petaliformis Assemblage of a Sakmarian to probably early Artinskian age, and the upper (younger) Spinomartinia prolifica-Retimarginifera alata Assemblage of a late Kungurian age. The former assemblage is a typical cold-water fauna, mainly composed of Gondwanan-type genera, e.g., Bandoproductus Jin and Sun, 1981, Spirelytha Fredericks, 1924, and Sulciplica Waterhouse, 1968. The latter assemblage is strongly characterized by an admixture of both Cathaysian and Gondwanan elements, as well as some genera restricted to the Cimmerian continents. Notably, the spatial distribution pattern of these two separate brachiopod assemblages varies distinctly. The Sakmarian cold-water brachiopod faunas have been found in association with glacial-marine diamictites throughout the Sibumasu Block including both the Irrawaddy and Sibuma blocks. In contrast, the Kungurian biogeographically mixed brachiopod faunas are only recorded in the Irrawaddy Block, unlike the Sibuma Block that contains a contemporaneous paleotropical Tethyan fusuline fauna. Thus, it appears likely that by the end of Cisuralian (early Permian), the Sibumasu Block comprised the Irrawaddy Block in the south with cool climatic conditions, and the Sibuma Block in the north with a temperate to warm-water environment, separated by the incipient Thai-Myanmar Mesotethys.

Permian Brachiopods from Southern Thailand

1976 ◽  
Vol 50 (S9) ◽  
pp. 1-261 ◽  
Author(s):  
Richard E. Grant
Keyword(s):  
Western Hemisphere ◽  
Lower Permian ◽  
New Family ◽  
Salt Range ◽  
Cardinal Process ◽  
Tropical Conditions ◽  
Southern Thailand ◽  
Life Habits ◽  
Brachiopod Fauna ◽  
Functional Analyses

The Rat Buri Limestone was sampled for silicified brachiopods at 7 localities along the southern peninsula of Thailand. From north to south these localities are: Ban Kao, Khao Phrik, Khao Tok Nam, Khao Chang, Phangnga, Ko Muk NE, and Ko Muk NW. This limestone forms steep monadnocks that project above the alluvium (or the sea at Muk Island), and lacks any clear stratigraphic succession. Fossils indicate that Permian limestones identified throughout Thailand as the Rat Buri range in age from Sakmarian through Kazanian. The brachiopods from the peninsular localities indicate a late Artinskian (Baigendzinian) age and are correlated with the lower Byro Group of Western Australia, the Bitauni fauna of Timor, the upper Amb Formation in the Salt Range of Pakistan, the Lower Permian in the Karakorum Range, and the Trogkofel Limestone of the Karawanken Range in Yugoslavia. Western Hemisphere correlations are with the Copacabana Group of Peru and Bolivia and, very tenuously, with the topmost Cathedral Mountain or the lower Road Canyon Formations in West Texas.Analyses of life habits of the brachiopods indicate the following: Ban Kao lay nearest the Permian shore; the Rat Buri region was under shallow and fairly clear water, perhaps offshore from a reef; Phangnga was a muddy environment with many spiny and attached forms; Ko Muk was also fairly clear, and an especially favorable place for the growth of brachiopods. Sampling efficiency ranges from rather poor (Index .30) to very good (Index .75) with an overall index of .85 for the entire fauna. The Permian Index indicates that these faunas lived under tropical conditions, but the presence of certain genera suggests that seaways were open to Boreal regions.The brachiopod fauna consists of 109 species and 81 genera, of which one family, 15 genera and 71 species are new; 78 of these genera are considered here. The new genera (with family position in parentheses) are:Nematocrania(Craniidae);Demonedys(Chonetidae);Stictozoster(Productellidae);Comuquia, Dyschrestia(Overtoniidae);Incisius(Incisiidae, new family);Caricula, Gratiosina(Marginiferidae);Bibatiola, Celebetes(Chonetellidae);Stereochia(Dictyoclostidae);Litocothia(Lyttoniidae);Goleomyxa(Atriboniidae);Cruricella(Ambocoeliidae);Tipispirifer(Cyrtospiriferidae).Certain genera and species were selected for functional analyses. The lophophore ofIncisiusis interpreted as a filled-in schizolophe. The muscles of the Ambocoeliidae are reconstructed with a set of adjustor muscles designed to raise the shell to allow it to gape. Life position and muscle arrangement ofParalyttonia(and by analogy,Rigbyella)are reconstructed. The mode of growth and possible function of the stegidial plates ofTipispiriferare presented and, in the same vein, previous interpretations are the sequence of growth in the stegidium of the Devonian genusSphenospiraare criticized and analyzed. The cardinalia ofCleiothyridinaare interpreted with regard to muscle attachment, and the apical perforation is compared to the cardinal process of other brachiopods. The lophophore ofChonetinais reconstructed as a ptycholophe whose direction of growth is determined by the position and configuration of the anderidia.Derbyiaand other Orthotetacea are depicted as having attached to the substrate by byssus-like pedicular fibers, and thus were able to cling to loose sediment.

scholarly journals A TOURNAISIAN BRACHIOPOD FAUNA FROM SOUTH-EAST WALES

Palaeontology ◽  
2006 ◽  
Vol 49 (3) ◽  
pp. 485-535 ◽  
Author(s):  
MICHAEL G. BASSETT ◽  
CATHERINE BRYANT
Keyword(s):  
Brachiopod Fauna

An endemic brachiopod fauna from the Middle Ordovician of North Wales

1993 ◽  
Vol 28 (1) ◽  
pp. 21-36 ◽  
Author(s):  
D. A. T. Harper ◽  
P. J. Brenchley
Keyword(s):  
Middle Ordovician ◽  
North Wales ◽  
Brachiopod Fauna
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