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Tommotiida

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Journal Article

TANNUOLINA AND MICRINA (TANNUOLINIDAE) FROM THE LOWER CAMBRIAN OF EASTERN YUNNAN, SOUTH CHINA, AND THEIR SCLERITOME RECONSTRUCTION Available to Purchase

GUOXIANG LI, SHUHAI XIAO
Published: 01 September 2004
Journal of Paleontology (2004) 78 (5): 900–913.
DOI: https://doi.org/10.1666/0022-3360(2004)078<0900:TAMTFT>2.0.CO;2
..., a conservative estimate is that the microfossils reported in this paper can be anytime from Tommotian to early Botomian in age. The order Tommotiida Missarzhevsky, 1970 (1969), as emended by Landing (1984) , includes four families—Tannuolinidae Fonin and Smirnova, 1967 , Lapworthellidae Missarzhevsky...
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Journal Article

Occurrence of Tannuolina in the early Cambrian siltstones of the Hazara Basin, North Pakistan, and its biostratigraphical significance Available to Purchase

Bing Pan, Malik Muhammad Saud Sajid Khan, Guoxiang Li, Shehryar Ahmed, Muhammad Qasim, Zongjun Yin, Ishtiaq A. K. Jadoon, Maoyan Zhu
Published: 14 June 2023
Journal of the Geological Society (2023) 180 (4): jgs2021-149.
DOI: https://doi.org/10.1144/jgs2021-149
... have been included in the order Tommotiida and are possibly related to brachiopods ( Skovsted et al. 2008 , 2009 b , 2011 ). Based on sclerite features, at least five families (Tommotiidae, Lapworthellidae, Kennardiidae, Sunnaginidae and Tannuolinidae) have been identified. So far, diverse...
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Journal Article

Discussion Open Access

Published: 01 January 1999
Jour. Geol. Soc. India (1999) 53 (1): 120–133.
DOI: https://doi.org/10.17491/jgsi/1999/530102
... occur in right and left symmetry forms. These features characterise the order ~ i t r o s a ~ o ~ hBoernagtson (1970).It is likely that Taliella,if a valid genus, may also belong to this order. Its placement in the family Tommotiidae may not be correct, as none of the sclerites show densely lamellar...
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Journal Article

The scleritome of Eccentrotheca from the Lower Cambrian of South Australia: Lophophorate affinities and implications for tommotiid phylogeny Available to Purchase

Christian B. Skovsted, Glenn A. Brock, John R. Paterson, Lars E. Holmer, Graham E. Budd
Journal: Geology
Published: 01 February 2008
Geology (2008) 36 (2): 171–174.
DOI: https://doi.org/10.1130/G24385A.1
.... 15 10 2007 24 08 2007 15 10 2007 The Geological Society of America, Inc. 2008 Tommotiida phylogeny Brachiopoda Phoronida Lower Cambrian Tommotiids are small, organophosphatic fossils that are among the earliest mineralized remains of animals in the fossil record...
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View PDF for article title, The scleritome of Eccentrotheca from the Lower Cambrian of South Australia: Lophophorate affinities and implications for tommotiid phylogeny
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Journal Article

Discovery of Lower Cambrian Small Shelly Fossils and Brachiopods from the Lower Vindhyan of Son Valley, Central India Available to Purchase

R. J. Azmi
Published: 01 October 1998
Jour. Geol. Soc. India (1998) 52 (4): 381–389.
DOI: https://doi.org/10.17491/jgsi/1998/520402
... is Taxonomy of Taliella n. gen. possibly equivalent to the Blaini Conglomerate of the Krol Belt) and was Phylum and Class: Uncertain disrupted in the Atdabanian time of Early Order: TOMMOTIIDA Cambrian (- 528 Ma) with a regional Missarzhevsky, 1969 (1970) emend. unconformity at the base of the Kaimur Family...
View PDF for article title, Discovery of Lower Cambrian Small Shelly Fossils and Brachiopods from the Lower Vindhyan of Son Valley, Central India
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Journal Article

Small shelly fossils of late Precambrian and early Cambrian age: a review of recent work Available to Purchase

S. C. MATTHEWS, V. V. MISSARZHEVSKY
Published: 01 June 1975
Journal of the Geological Society (1975) 131 (3): 289–303.
DOI: https://doi.org/10.1144/gsjgs.131.3.0289
... phosphatic shells ranging in form from near-conoidal (approximately patelliform) to conchiform, but in no case bilaterally symmetrical. Fossils belong- ing to the Order Tommotiida (ex Camenida Missarzhevsky 1969, pre-occupied) have recently been described by Bengtson (197o) and Matthews (I973). Daily (1972...
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Journal Article

New biostratigraphical constraints on the Lower and lower Middle Cambrian of the Kharaulakh Mountains ( northeastern Siberian Platform, Chekurovka anticline ) Available to Purchase

I.V. Korovnikov, N.V. Novozhilova
Published: 01 August 2012
Russ. Geol. Geophys. (2012) 53 (8): 776–786.
DOI: https://doi.org/10.1016/j.rgg.2012.06.005
... of the sandstone interbed. They are overlain by a relatively thick (20 m) conglomerate bed consisting of well-rounded granite-porphyry pebbles. Chert and marl pebbles are rare. Fossils of Tommotiidae Lapworthella tortuosa were found 2.5 m from the subformation bottom . The subformation is 26 m thick except...
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View PDF for article title, New biostratigraphical constraints on the Lower and lower Middle Cambrian of the Kharaulakh Mountains ( northeastern Siberian Platform, Chekurovka anticline )
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Journal Article

The oldest Cambrian skeletal fossils of Spain (Cadenas Ibéricas, Aragón) Available to Purchase

JOSÉ ANTONIO GÁMEZ VINTANED, ELADIO LIÑÁN, DAVID NAVARRO, ANDREY YU. ZHURAVLEV
Published: 30 May 2017
Geological Magazine (2018) 155 (7): 1465–1474.
DOI: https://doi.org/10.1017/S0016756817000358
... and archaeocyaths) and their stratigraphic significance . Geologiska Föreningens i Stockholm Förhandlingar 123 , 73 – 80 . Fernández-Remolar , D. C. 2002 . First record of Tannuolina Fonin & Smirnova, 1967 (Tommotiida) from the Lower Cambrian Pedroche Formation, southern Spain . Revista...
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Journal Article

New early Cambrian sclerites of Lapworthella schodakensis from NE Greenland: advancements in knowledge of lapworthellid taxonomy, sclerite growth and scleritome organization Available to Purchase

L. DEVAERE, C. B. SKOVSTED
Published: 02 August 2016
Geological Magazine (2017) 154 (5): 1061–1072.
DOI: https://doi.org/10.1017/S0016756816000698
... Australia . Memoirs of the Association of Australasian Palaeontologists 9 , 1 – 364 . Bischoff G. C. O. 1976 . Dailyatia , a new genus of the Tommotiidae from Cambrian strata of SE Australia (Crustacea, Cirripedia) . Senkenbergiana Lethaea 57 , 1 – 33 . Caron J-B. , Smith M. R...
View PDF for article title, New early Cambrian sclerites of Lapworthella schodakensis from NE Greenland: advancements in knowledge of lapworthellid taxonomy, sclerite growth and scleritome organization
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Journal Article

Cambrian Age 3 small shelly fossils from the Terrades inlier, southern Pyrenees, Spain: Biostratigraphic and paleobiogeographic implications Available to Purchase

Elise Wallet, Maxime Padel, Léa Devaere, Sébastien Clausen, J. Javier Álvaro, Bernard Laumonier
Published: 01 May 2022
Journal of Paleontology (2022) 96 (3): 552–582.
DOI: https://doi.org/10.1017/jpa.2021.123
.... , and Grigorieva , N.V. , 1981 , New representatives of the order Tommotiida : Paleontological Journal , v. 15 , p. 96 – 103 . [in Russian] Missarzhevsky , V.V. , and Mambetov , A.M. , 1981 , [Stratigraphy and fauna of the Cambrian and Precambrian boundary beds of the Lesser Karatau Range...
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Journal Article

Faunas and Cambrian Volcanism on the Avalonian Marginal Platform, Southern New Brunswick Available to Purchase

Ed Landing, Susan C. Johnson, Gerd Geyer
Published: 01 September 2008
Journal of Paleontology (2008) 82 (5): 884–905.
DOI: https://doi.org/10.1666/07-007.1
..., 6.15 ); structural detail on visceral surface of the proclined to rarely catacline pedicle valves limited to a subtly thickened apical process that rings the foramen. Order Tommotiida Missarzhevsky, 1969 (1970), emend. Landing, 1984 Family Lapworthellidae Missarzhevsky, 1966...
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Journal Article

Chronology of early Cambrian biomineralization Available to Purchase

ARTEM KOUCHINSKY, STEFAN BENGTSON, BRUCE RUNNEGAR, CHRISTIAN SKOVSTED, MICHAEL STEINER, MICHAEL VENDRASCO
Published: 26 August 2011
Geological Magazine (2012) 149 (2): 221–251.
DOI: https://doi.org/10.1017/S0016756811000720
... Cambrian genus Camenella and the problem of scleritome-based taxonomy of the Tommotiida . Paläontologische Zeitschrift 60 (1–2) , 45 – 55 . Bengtson S. 1992 a . The cap-shaped Cambrian fossil Maikhanella and the relationship between coeloscleritophorans and molluscs . Lethaia 25...
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Book Chapter

The Precambrian–Phanerozoic and Ediacaran–Cambrian boundaries: a historical approach to a dilemma Available to Purchase

Author(s)
Gerd Geyer, Ed Landing
Book: Earth System Evolution and Early Life: A Celebration of the Work of Martin Brasier
Series: Geological Society, London, Special Publications
Publisher: Geological Society of London
Published: 01 January 2017
DOI: 10.1144/SP448.10
EISBN: 9781786202932
... for a collective term ‘tommotiids’ for organisms of problematic systematic position that secreted phosphatic sclerites and occurred as fossils in the strata of the Tommotian. The tommotiids were subsequently restricted to a systematically robust group of organisms (now the order Tommotiida), so that the term...
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Abstract The Cambrian was originally defined as a rock interval with a trilobite-dominated fauna that overlay a presumed biologically barren Precambrian epoch. Work to formally define the Cambrian base arose after the discovery of Precambrian macrofossils in South Australia. The Working Group on the Precambrian–Cambrian Boundary (set up in 1972) promoted an emphasis on an extended pre-trilobitic interval with mineralized skeletal elements (small shelly fossils or early skeletal fossils). The study of early skeletal fossils made the Ulakhan-Sulugur (Siberia) and Meishucun (South China) sections candidates for the basal Cambrian Global Stratotype Section and Point (GSSP), but difficulties in correlation and the taxonomy of early skeletal fossils did not allow the selection of a reliably correlative horizon. Bilaterian ichnofaunas below the first diverse early skeletal fossils suggested the definition of a Cambrian base GSSP below the early skeletal fossils. Work on the thick, stratigraphically continuous and fairly unifacial sections in the Burin Peninsula, southeastern Newfoundland led in 1992 to an ichnofossil-defined GSSP at Fortune Head. Despite arguments for a revision and redefinition of the lower boundary of the Cambrian System, the best definition of the basal Cambrian GSSP is at Fortune Head and does not rely on the Treptichnus/Trichophycus pedum (abbreviated below as T. pedum) first appearance datum, but rather on the base of the T. pedum Assemblage Zone at the highest occurrence of Ediacaran taxa and in the lower range of T. pedum .