Teiichispira, a new Early Ordovician gastropod genus

Yochelson, Ellis L.; Jones, Clive R.

doi:10.3133/pp613b

Cited by 11 publications

(16 citation statements)

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“…1) is consists of reddish stylolitic and nodular limestones. Brachiopods, gastropod, cephalopods, trilobites, and conodonts reported from the limestone indicate an Ordovician (Floian-Hirnantian) age (Yochelson and Jones, 1968;Kobayashi and Hamada, 1978;Cooper, 1988;Cocks et al, 2005;Agematsu et al, 2008). The Tanjong Dendang Formation corresponds to the Lower Detrital Member of Jones (1981).…”

Section: Geological Settingmentioning

confidence: 99%

Lowermost Devonian conodonts from the Setul Group, northwestern Peninsular Malaysia

Takahashi

Agematsu

Rahman³

et al. 2017

Jour. Geol. Soc. Japan

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The Setul Group, which contains a thick Lower Ordovician to Early Devonian limestone succession, occurs in northwestern Perlis State and the Langkawi Islands, Peninsular Malaysia. We report a lowermost Devonian conodont fauna characterized by Flajsella stygia and Flajsella streptostygia from a limestone section near the small town of Kaki Bukit, in what was previously considered to be Ordovician limestone. The studied limestone corresponds to the youngest part of the Mempelam Limestone. Nine species of conodonts in six genera are systematically investigated herein, of which three species Dvorakia amsdeni, D. philipi and F. streptostygia are the first reports in the Peninsula Malaysia. The stratigraphic correlations of the rock are also briefly discussed. Report (Contributions of authors) Yui Takahashi write the entire parts of the manuscript Sachiko Agematsu review the identifications of conodonts and the stratigraphical correlation in discussion part. Katsuo Sashida Manage the progress of research and review the manuscript Mat Niza Abdul Rahman check the geology of the Peninsular Malaysia

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Section: Geological Settingmentioning

confidence: 99%

Lowermost Devonian conodonts from the Setul Group, northwestern Peninsular Malaysia

Takahashi

Agematsu

Rahman³

et al. 2017

Jour. Geol. Soc. Japan

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“…Upper Cambrian trilobites occur in shales at Paoshan and Mangshih, west Yunnan, in the north, and in the Tarutao sandstone at Tarutao island just to the north of the Thailand-Malaysian boundary (Sun, 1939, Kobayashi, 1957, Lu, 1964. In the Langkawi Islands to the south of the boundary the thick "Machinchang clastic series" is overlain by fossiliferous Ordovician limestone, but its base is unexposed (Jones, 1968).…”

Section: Cambrian Sediments and The So-called Precambrian Rocksmentioning

confidence: 99%

“…Teiichispira and Discoceras (Hardomanoceras ? ) suggest an upper Canadian-lower Chazyan and actinoceroids, brachiopods and some others are Mohawkian (Kobayashi, 1958(Kobayashi, , 1959Kobayashi & Hamada, 1963 ;Hamada, 1963 ;Yochelson & Jones, 1968). This and the preceding facies are linked with Armenoceras and Ormoceras from the Huai Urn Lu, Northwest Thailand (Kobayashi, 1961), nautiloids from Kyaukse (Thein, 1968), and the Orthoceras beds near Mawson, south Shan states (Reed, 1936).…”

Section: Three Facies Of Ordovician Sedimentsmentioning

confidence: 99%

“…In Pulau Langgon, Langkawi Islands, the Upper Detrital band, Lower and Middle Devonian in age, is unconformably overlain by the conglomeratic mudstone at the base of the red beds (Kimura and Jones , 1957). According to Jones (1968) the Upper Devonian to Lower Permian Singa and Kampong Sena formations overlie the Lower Devonian and older Palaeozoic unconformably in the northwestern part of the Malayan peninsula, but the discordance becomes indistinct easterly and the Middle Palaeozoic limestone is unbroken in central Perak. Burton (1966) argued for the existence of the Langkawi folding phase, saying that it "is most probably of Middle to Upper Carboniferous date," because granite TEIICH!…”

Section: Palaeozoic Crustal Movements and Igneous Activitiesmentioning

confidence: 99%

“…In the early stage there occurred no orogenic movement, although some intrageosynclinal volcanism in the late Ordovician and late Silurian times is reported from the Malayan peninsula. (Jones, 1968).…”

Section: Palaeozoic Crustal Movements and Igneous Activitiesmentioning

confidence: 99%

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The Early Stage of the Burmese-Malayan Geosyncline

Kobayashi¹

1973

BGSM

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The history of this geosyncline is divided into three stages: (1) Devonian and older ; (2) late Devonian to middle Triassic; and (3) la ter Mesozoic period. The socalled Pre-Cambrian metamorphic rocks require a further confirmation of their ages Upper Cambrian is the oldest dated sediment of the geosyncline. Three facies named Shihtien, Naungkangyi, and Thungson, can be distinguished in the Ordovician formation. In the later Palaeozoic sequence carbonate-rich and carbonate-poor facies alternate twice or more with intercalations of graptolites and tentaculites facies and other clastic facies . Broadly speaking, the early stage was the age of epirogenic undulations, whil e the second stage was the age of embryonic foldings by which the geosyncline was partly modified, and at length it was wholly deformed and consolidated by Mesozoic orogenies.

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Phragmolites (Gastropoda) from the Late Ordovician of the Peruvian Altiplano

Ebbestad

Gutiérrez-Marco

2019

J. Paleontol.

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Phragmolites lissoni new species is described from 11 specimens found in the Sandbian Calapuja Formation near Calapuja in Peru. The deposits are part of the Central Andean Basin. This is the hitherto only systematically described Ordovician gastropod from Peru. The species is from a brachiopod-dominated siliciclastic sequence and is associated with bryozoans. Most specimens are preserved as external molds, but latex casts yield excellent details of shell ornamentation and are used as a basis for evaluating this feature in the genus. The characteristic ornamentation of Phragmolites should be called corrugated lamellae, and the individual elements on these should be referred to as flutes. A descriptive terminology for these is suggested. The development and shape of the corrugated lamellae and flutes could be biomechanical process. A second component in lamellar formation is the alternation between regular incremental growth and formation of a lamella. Phragmolites is mainly found in shallow-water carbonate facies from tropical latitudes in the Sandbian and a mid-latitude presence in Peru is unexpected. Brachiopods from the same section in Calapuja show affinities with faunas of the Mediterranean margin of Gondwana but also weak links with Avalonia. Phragmolites is found abundantly in deeper-water facies in Laurentia, and a broad tolerance to facies and temperature and possible planktotrophy might have allowed a wide geographical dispersal of the genus. The scant record of Ordovician gastropods in the Central Andean Basin precludes comparison with the disparate record of the Ordovician gastropod taxa from the Precordillera, which do not include Phragmolites.UUID: http://zoobank.org/References/fbd7a43e-a610-42fd-a31d-b1a16fa69c9b

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Teiichispira, a new Early Ordovician gastropod genus

Abstract: PLATE 1. Teiichispira? sylpha (Billings) and T. kobayashi Yochelson and Jones. 2. Teiichispira rossi Yochelson and Jones, T. odenvillensis (Butts), and opercula of unnamed macluritaceans.

Cited by 11 publications

References 10 publications

Lowermost Devonian conodonts from the Setul Group, northwestern Peninsular Malaysia

Lowermost Devonian conodonts from the Setul Group, northwestern Peninsular Malaysia

The Early Stage of the Burmese-Malayan Geosyncline

Phragmolites (Gastropoda) from the Late Ordovician of the Peruvian Altiplano

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