scholarly journals Foraminifers and algae from the Khuff Formation (late Middle Permian-Early Triassic) of central Saudi Arabia

GeoArabia ◽  
2005 ◽  
Vol 10 (4) ◽  
pp. 137-186 ◽  
Author(s):  
Daniel Vachard ◽  
Jérémie Gaillot ◽  
Denis Vaslet ◽  
Yves-Michel Le Nindre
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
South China ◽  
New Age ◽  
Middle Permian ◽  
Early Triassic ◽  
Late Permian ◽  
Foraminiferal Assemblage ◽  
Smaller Foraminifers ◽  
One New Species

ABSTRACT Algae and smaller foraminifers of the eponymous Khuff Formation (Saudi Arabia) principally comprise Permocalculus, biseriamminids, hemigordiids and lagenids. Due to the end-Capitanian crisis (Late/Middle Permian boundary) and the regional palaeoecology, fusulinids are rare and only represented by Nankinella sp. and Eostaffella? sp. Palaeofusulinids are completely lacking. New age data shows that these foraminifers correspond to the complete Lopingian (Late Permian) as indicated by several species of Paradagmarita. The position of the Triassic/Permian Boundary is approximately characterised, but requires more accurate studies. Forty-three taxa were identified, mostly in open nomenclature. One new species is described: Glomospirella? linae n. sp. The foraminiferal assemblage is correlated with several associations in Iran, Turkey, Transcaucasia and south China.

Middle Permian (Roadian) gastropods from the Khao Khad Formation, Central Thailand: Implications for palaeogeography of the Indochina Terrane

Zootaxa ◽  
2020 ◽  
Vol 4766 (1) ◽  
pp. 1-47 ◽  
Author(s):  
CHATCHALERM KETWETSURIYA ◽  
BARAN KARAPUNAR ◽  
THASINEE CHAROENTITIRAT ◽  
ALEXANDER NÜTZEL
Keyword(s):  
New Species ◽  
Shallow Water ◽  
South China ◽  
New Genus ◽  
Middle Permian ◽  
Late Permian ◽  
Gastropod Species ◽  
Late Palaeozoic ◽  
Central Thailand

A new Permian gastropod assemblage from the Roadian (Middle Permian) Khao Khad Formation, Saraburi Group (Lopburi Province, Central Thailand) which is part of the Indochina Terrane, has yielded one of the most diverse Permian gastropod faunas known from Thailand. A total of 44 gastropod species belonging to 30 genera are described herein, including thirteen new species and one new genus. The new genus is Altotomaria. The new species are Bellerophon erawanensis, Biarmeaspira mazaevi, Apachella thailandensis, Gosseletina microstriata, Worthenia humiligrada, Altotomaria reticulata, Yunnania inflata, Trachydomia suwanneeae, Trachyspira eleganta, Heterosubulites longusapertura, Platyzona gradata, Trypanocochlea lopburiensis and Streptacis? khaokhadensis. Most of the species in the studied assemblage represent vetigastropods  (35.6%) and caenogastropods (26.7%) and most of the species belong to Late Palaeozoic cosmopolitan genera. The studied faunas come from shallow water carbonates that are rich in fusulinids, followed by gastropods, ostracods, bivalves and brachiopods. The gastropod assemblage from the Khao Khad Formation shares no species with the gastropod assemblages from other Permian formations in Thailand, the Tak Fa Limestone and the Ratburi Limestone. However, it is similar to the Late Permian gastropod faunas from South China of the Palaeo-Tethys, therefore it suggests that the Indochina Terrane was not located far from South China. 

scholarly journals The Permian-Triassic Khuff Formation of central Saudi Arabia

GeoArabia ◽  
2005 ◽  
Vol 10 (4) ◽  
pp. 77-134 ◽  
Author(s):  
Denis Vaslet ◽  
Yves-Michel Le Nindre ◽  
Daniel Vachard ◽  
Jean Broutin ◽  
Sylvie Crasquin-Soleau ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Early Triassic ◽  
Late Permian ◽  
Marine Fauna ◽  
Closed Basin ◽  
Smaller Foraminifers ◽  
Continental Deposits ◽  
Flooding Event ◽  
Terminal Permian ◽  
Shale Formation

ABSTRACT The Permian-Triassic Khuff Formation crops out in central Saudi Arabia along a N-S belt, some 1,200 km in length. It is 171.4 m (562.2 ft) thick in the type section and divided into five members; from oldest to youngest: Ash Shiqqah (formerly Unayzah member of the Khuff Formation), Huqayl, Duhaysan, Midhnab and Khartam. The base of the Khuff Formation is recognised as a regional unconformity (Pre-Khuff Unconformity), and the top of the formation is defined by the conformable contact with the overlying Sudair Shale. The Ash Shiqqah Member is tentatively dated as ?Middle Permian ?Capitanian (?Midian) based on the presence of the fusulinids Monodiexodina kattaensis and Reichelina sp. The Huqayl Member is tentatively dated as ?Late Permian ?Wuchiapingian (?Dzhulfian) based on an assemblage of smaller foraminifers dominated by Pseudomidiella cf. labensis, Earlandia? spp. and Neodiscus aff. qinglongensis. The Duhaysan Member is dated as Late Permian (Wuchiapingian-Changhsingian) based on Hemigordius baoqingensis, Graecodiscus cf. kotlyarae, “Dentalina” hoi, and Colaniella cf. minuta. The sMidhnab Member is dated as Changhsingian (Dorashamian) based on Paradagmarita sp. and “Glomospirella spirillinoides” and the disappearance of the genera Nankinella and Globivalvulina. Within the continental facies in the upper part of the Midhnab Member, incised channels facies yielded the Late Permian Midhnab Flora. The Lower Khartam Member is also dated as latest Permian (Dorashamian) based on the presence of several species of Paradagmarita and “Nodosaria” dzhulfensis in the lowest beds of the member, and the ostracods Paraparchites spp., Knoxiella spp. and Kloedenellitina sp. throughout the Lower Khartam Member. The Upper Khartam Member is assigned to an Early Triassic (‘Scythian’) age based on the occurrence of the characteristic annelid Spirorbis phlyctaena. The Khuff Formation, in central Saudi Arabian outcrops, consists of four regional depositional sequences (DS PKh, DS PKm, DS PKk and DS TrS), each containing a maximum flooding interval (MFI, with the same designation). The oldest sequence DS PKh (named after Permian-Khuff-Huqayl) consists of the Ash Shiqqah and overlying Huqayl members. The basal sequence boundary corresponds to the Pre-Khuff Unconformity (PKU) and represents the onset of the first Permian flooding event recorded in the outcrops of Saudi Arabia. The massive gypsum, gypsiferous claystone, and solution breccias in the Ash Shiqqah Member are correlated to the subsurface Khuff-D Anhydrite. The MFI PKh is positioned in the basal part of the Huqayl Member, and is followed by the regressive evaporitic palaeoenvironments of the Huqayl Member. The DS PKm (named after Permian-Khuff-Midhnab) starts with the subtidal to littoral deposits of the Duhaysan Member, over an erosive surface upon DS PKh; and ends with the regressive supratidal to continental deposits at the upper part of the Midhnab Member. The MFI PKm is located at the base of the Midhnab Member, where limestones yielded an abundant marine fauna including cephalopods and brachiopods. The terminal Permian DS PKk (Permian-Khuff-Khartam) corresponds to the Lower Khartam Member. The basal SB PKk is marked by a return to marine subtidal conditions after the continental break at the end of DS PKm. The MFI PKk is characterised by marine fauna including abundant Permian ostracods, bactritids, and locally cephalopods. The DS TrS (named after the Sudair Shale Formation) starts with the littoral, tidal to intertidal deposits of the Early Triassic Upper Khartam Member of the Khuff Formation, and ends with the closed basin, clayey to evaporitic rocks of the Early Triassic Sudair Shale.

Sphinctozoan sponges from the Permian reefs of South China

1989 ◽  
Vol 63 (4) ◽  
pp. 404-439 ◽  
Author(s):  
J. K. Rigby ◽  
Fan Jiasong ◽  
Zhang Wei
Keyword(s):  
New Species ◽  
South China ◽  
Middle Permian ◽  
Upper Permian ◽  
Late Permian ◽  
New Genera ◽  
Patch Reefs ◽  
New Family ◽  
Eastern Sichuan ◽  
New Occurrences

Middle and Late Permian sphinctozoan sponges described here are from the Middle Permian Maokou and the Upper Permian Wujiaping and Changxing Formations. Most are from near Xiangbo, northwestern Guangxi, but a few are from Upper Permain patch reefs from Laolongdong in eastern Sichuan. The new genera, the porateImbricatocoeliaand the aporateGlomocystospongia, are described, the latter as the type genus for the new family Glomocystospongiidae. New species described includeAmblysiphonella specialis, Amblysiphonella spinosa, Amblysiphonellasp. A,Amblysiphonellasp. B,Colospongia maxima, Colospongiasp. A,Imbricatocoelia elongata, I. irregulara, I. obconica, I. paucipora, Neoguadalupia explanata, Subascosymplegma?paracatenulata, Rhabdactinia depressa, R. irregulara, R. squamula, Salzburgia nana, Glomocystospongia gracilis, Sollasia absita, andS. spheroida. New occurrences ofAmblysiphonella merlai? Parona, 1933,Lichuanospongia typicaZhang, 1983,Polycystocoelia huajiapingensisZhang, 1983,Intrasporeocoelia hubeiensisFan and Zhang, 1985,Rhabdactinia columnariaYabe and Sugiyama, 1934,Uvanella irregularaOtt, 1967,Stromatocoelia asiaticaZhang and Fan (in Fan and Zhang, 1985), andTebagathalamia cylindricumSenowbari-Daryan and Rigby, 1988, are reported. The described assemblage represents the most diverse Permian sphinctozoan sponge fauna known from Asia.

scholarly journals New records and new taxa of Permian brachiopods from the Khuff Formation, Midhnab Member, central Saudi Arabia

GeoArabia ◽  
2006 ◽  
Vol 11 (4) ◽  
pp. 45-58 ◽  
Author(s):  
Lucia Angiolini ◽  
Denis Vaslet ◽  
Yves-Michel Le Nindre ◽  
Miriam Zarbo
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
New Taxa ◽  
New Records ◽  
Middle Permian ◽  
New Taxon ◽  
Late Permian ◽  
Salt Range ◽  
First Time

ABSTRACT Brachiopods are described for the first time from outcrops of the lower part of the Midhnab Member of the Khuff Formation in central Saudi Arabia. The very rare fauna discovered includes Kotlaia sp. ind. of the order Orthida and Omanilasma husseinii n. gen. n. sp. of the order Terebratulida. Besides this new taxon, another new species Omanilasma desertica n. gen. n. sp. from the Khuff Formation of Interior Oman is here erected. The brachiopods were collected from an open-marine horizon and are associated with nautiloids, bactritids, bivalves, foraminifers, algae, and ostracods. A probable Late Permian age is assigned to the lower part of the Midhnab Member based on foraminifers. The brachiopods are compared to similar faunas from the Middle Permian Khuff Formation of Interior Oman, Amb Formation of Salt Range (Pakistan) and Rat Buri Limestone of Southeast Thailand.

Nature and origin of the volcanic ash beds near the Permian–Triassic boundary in South China: new data and their geological implications

2019 ◽  
Vol 157 (4) ◽  
pp. 677-689 ◽  
Author(s):  
Binsong Zheng ◽  
Chuanlong Mou ◽  
Renjie Zhou ◽  
Xiuping Wang ◽  
Zhaohui Xiao ◽  
...  
Keyword(s):  
Trace Element ◽  
Continental Margin ◽  
South China ◽  
Volcanic Ash ◽  
Active Continental Margin ◽  
Main Body ◽  
Early Triassic ◽  
Late Permian ◽  
Triassic Boundary ◽  
Permian Triassic Boundary

AbstractPermian–Triassic boundary (PTB) volcanic ash beds are widely distributed in South China and were proposed to have a connection with the PTB mass extinction and the assemblage of Pangea. However, their source and tectonic affinity have been highly debated. We present zircon U–Pb ages, trace-element and Hf isotopic data on three new-found PTB volcanic ash beds in the western Hubei area, South China. Laser ablation inductively coupled plasma mass spectrometry U–Pb dating of zircons yields ages of 252.2 ± 3.6 Ma, 251.6 ± 4.9 Ma and 250.4 ± 2.4 Ma for these three volcanic ash beds. Zircons of age c. 240–270 Ma zircons have negative εHf(t) values (–18.17 to –3.91) and Mesoproterozoic–Palaeoproterozoic two-stage Hf model ages (THf2) (1.33–2.23 Ga). Integrated with other PTB ash beds in South China, zircon trace-element signatures and Hf isotopes indicate that they were likely sourced from intermediate to felsic volcanic centres along the Simao–Indochina convergent continental margin. The Qinling convergent continental margin might be another possible source but needs further investigation. Our data support the model that strong convergent margin volcanism took place around South China during late Permian – Early Triassic time, especially in the Simao–Indochina active continental margin and possibly the Qinling active continental margin. These volcanisms overlap temporally with the PTB biocrisis triggered by the Siberian Large Igneous Province. In addition, our data argue that the South China Craton and the Simao–Indochina block had not been amalgamated with the main body of Pangea by late Permian – Early Triassic time.

Early Silurian Benthic Foraminifera from Saudi Arabia - including the oldest known multichambered lituolids

Stratigraphy ◽  
2020 ◽  
pp. 141-185
Author(s):  
Michael A. Kaminski ◽  
Pramudya R. D. Perdana
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
North America ◽  
Benthic Foraminifera ◽  
Early Evolution ◽  
Foraminiferal Assemblage ◽  
New Findings ◽  
New Finding ◽  
Agglutinated Foraminifera

ABSTRACT: A diverse assemblage of early Silurian agglutinated foraminifera is described from the transitional facies between the Qusaiba and Sharawra Formations of theQalibah Group of Saudi Arabia. The agglutinated foraminiferal assemblage consists of 73 species belonging to 24 genera, and is found in in dark graptolite-bearing claystone of Aeronian age. The assemblage is highly diverse compared with coeval early Silurian assemblages reported from Europe and North America. The assemblage is comprised mainly of species belonging to the monothalamid genera Saccammina, Psammosphaera, Lagenammina, Thurammina, Thuramminoides, Amphitremoida, Bathysiphon, Rhabdammina, and the tubothalamid genera Hyperammina, Tolypammina and Turritellella. The new species Thuramminoides ellipsoidalis n. sp. is described herein, but many of the species left in open nomenclature are also likely to be new. The assemblage also includes rare specimens belonging to the globothalamid (lituolid) genera Ammobaculites and Simobaculites. This new finding revises our understanding of the early evolution of the multichambered globothalamid foraminifera. Although the simple multichambered with rectilinear chamber arrangement are known from the Ordovician, our new findings show that the coiled globothalamids belonging to the order Lituolida are older than previously thought, and were already present in Gondwana by about 440 Ma.

scholarly journals Taxonomic updates and descriptions of four new Lophopini planthopper species (Hemiptera, Fulgoroidea, Lophopidae) from Yunnan province, South China

2016 ◽  
Author(s):  
Menglin Wang ◽  
Adeline Soulier-Perkins ◽  
Yinglun Wang ◽  
Thierry Bourgoin
Keyword(s):  
New Species ◽  
South China ◽  
Yunnan Province ◽  
Identification Key ◽  
Three New Species ◽  
One New Species

Taxonomic updates and descriptions of four new species from Yunnan, China are provided: three new species in the genus Pitambara Distant, 1906: P. triremiprocta Wang & Soulier-Perkins, sp. nov., P. impudica Wang & Bourgoin, sp. nov., P. tricorne Wang & Wang, sp. nov., and one new species in the genus Serida Walker, 1857: Serida parenthesisflexuosa Wang & Soulier-Perkins, sp. nov. A new identification key to Pitambara species is provided, as well as to the species of the genus Lacusa Stål, 1862. Lacusa yunnanensis Chou & Huang, 1985 stat. rev. is not considered as a synonym of the species L. fuscofasciata (Stål, 1854) anymore and Lacusa orientalis (Liang, 2000) is transferred to the genus Acothrura Melichar, 1915 as Acothrura orientalis (Liang, 2000) comb. nov.

scholarly journals The Dendrothripinae (Thysanoptera, Thripidae) of Saudi Arabia, with new records, one new species, and revised status of Pseudodendrothrips stuardoi (Moulton)

Zootaxa ◽  
2021 ◽  
Vol 4999 (3) ◽  
pp. 219-227
Author(s):  
IFTEKHAR RASOOL ◽  
LAURENCE A. MOUND ◽  
AHMED M. SOLIMAN ◽  
HATHAL M. ALDHAFER
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
New Records ◽  
Morus Alba ◽  
Ficus Carica ◽  
Mediterranean Countries ◽  
One New Species

Two genera Dendrothrips Uzel and Pseudodendrothrips Schmutz are recorded from Saudi Arabia. A key is provided to eight members of Dendrothrips that have antennae with 9-segments and D. saudicus sp. n. is described in this group. P. aegyptiacus (Priesner) and P. stuardoi are newly reported from Saudi Arabia, with P. stuardoi rev. stat. from the leaves of Ficus carica being newly distinguished from P. mori (Niwa) that lives on the leaves of Morus alba. Some published records of P. mori from Mediterranean countries are possibly misidentifications of P. stuardoi.

On the taxonomy of the genus Thyridanthrax Osten Sacken in Egypt and the Kingdom of Saudi Arabia, with description of a new species (Diptera: Bombyliidae)

Zootaxa ◽  
2019 ◽  
Vol 4701 (6) ◽  
pp. 501-519 ◽  
Author(s):  
MAGDI S. EL-HAWAGRY ◽  
MAHMOUD S. ABDEL-DAYEM ◽  
HATHAL M. AL DHAFER
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
Field Trips ◽  
The Other ◽  
Wing Morphology ◽  
Key To Species ◽  
Kingdom Of Saudi Arabia ◽  
Rigorous Study ◽  
One New Species ◽  
A New Species

Egyptian and Saudi Arabian Thyridanthrax spp. collected in field trips or preserved in the Efflatoun’s insect collection in Cairo University were taxonomically studied. One new species, T. elegansoides sp. nov., is herein described, and two species, T. decipulus (Austen) and T. polyphemus (Wiedemann), are newly recorded from Egypt. Ten species are treated: one species from the Kingdom of Saudi Arabia, T. anomalus Greathead; two species from Egypt and the Kingdom of Saudi Arabia, T. decipulus (Austen) and T. perspicillaris (Loew); and seven species from Egypt: T. elegans (Wiedemann), T. elegansoides sp. nov., T. griseolus (Klug), T. incanus (Klug), T. lotus (Loew), T. obliteratus (Loew), and T. polyphemus (Wiedemann). Taxonomic comments, an identification key to species, diagnoses, and photographs of some species and genitalia are provided. Based on wing morphology and male genitalic characters, T. lotus clearly does not fit in the genus Thyridanthrax, and may need to be placed elsewhere, nevertheless it is not clear whether it can be included in any of the other currently recognized genera in the tribe Villini. It is here kept in Thyridanthrax until a more rigorous study can be conducted to better ascertain its position in the Villini. 

First evidence of Lower–?Middle Ordovician (Floian–?Dapingian) brachiopods from the Peruvian Altiplano and their paleogeographical significance

2020 ◽  
Vol 95 (1) ◽  
pp. 56-74
Author(s):  
Jorge Colmenar ◽  
Eben Blake Hodgin
Keyword(s):  
New Species ◽  
South China ◽  
New World ◽  
New Genus ◽  
Island Arcs ◽  
Low Latitude ◽  
Middle Ordovician ◽  
Iapetus Ocean ◽  
Well Differentiated ◽  
One New Species

AbstractThe lower strata of the Umachiri Formation from the Altiplano of southeast Peru have yielded a brachiopod-dominated assemblage, containing representatives of the brachiopod superfamilies Polytoechioidea, Orthoidea, and Porambonitoidea, as well as subsidiary trilobite and echinoderm remains. Two new polytoechioid genera and species, Enriquetoechia umachiriensis new genus new species and Altiplanotoechia hodgini n. gen. n. sp. Colmenar in Colmenar and Hodgin, 2020, and one new species, Pomatotrema laubacheri n. sp., are described. The presence of Pomatotrema in the Peruvian Altiplano represents the occurrence at highest paleolatitude of this genus, normally restricted to low-latitude successions from Laurentia and South China. Other polytoechioids belonging to Tritoechia (Tritoechia) and Tritoechia (Parvitritoechia) also occur. Identified species of orthoids from the genera Paralenorthis, Mollesella, and Panderina? occur in the Peruvian Cordillera Oriental and in the Argentinian Famatina Range. The only porambonitoid represented is closely related to Rugostrophia latireticulata Neuman, 1976 from New World Island, interpreted as peri-Laurentian. These brachiopod occurrences indicate a strong biogeographic affinity of the Peruvian Altiplano with the Famatina and western Puna regions, suggesting that the brachiopod faunas of the Peruvian Altiplano, Famatina, and western Puna belonged to a well-differentiated biogeographical subprovince during the Early–Middle Ordovician on the margin of southwestern Gondwana. Links with peri-Laurentian and other low-latitude terranes could be explained by island hopping and/or continuous island arcs, which might facilitate brachiopod larvae dispersal from the Peruvian Altiplano to those terranes across the Iapetus Ocean. Brachiopods from the lower part of the Umachiri Formation indicate a Floian–?Dapingian age, becoming the oldest Ordovician fossils of the Peruvian Altiplano.UUID: http://zoobank.org/9670a000-260d-4d75-9261-110854c7afb8

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