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

  title={Small shelly fossils of late Precambrian and early Cambrian age: a review of recent work},
  author={S. C. Matthews and Vladimir V. Missarzhevsky},
  journal={Journal of the Geological Society},
  pages={289 - 303}
Stratigraphic sections in the high Precambrianlow Cambrian of Siberia are described. They have yielded the variety of fossils—archaeocyathids, gastropods, hyolithids, hyolithelminthids, poriferids, tommotiids and others—that characterize the Tommotian, Atdabanian and Lenian Stages. Some shelly fossils are found high in the Precambrian (Yudomian). The Tommotian Stage is regarded here as the lowest Cambrian unit. Trilobites first appear at the base of the Atdabanian Stage. A selection of fossils… 

The succession of small shelly fossils (especially conoidal microfossils) from English Precambrian–Cambrian boundary beds

  • M. Brasier
  • Geography, Geology
    Geological Magazine
  • 1986
Abstract Small shelly fossils, especially conoidal microfossils, have potential for biostratigraphic correlation of Precambrian–Cambrian boundary rocks where evolutionary successions of taxa can be

Small shelly fossils and trace fossils near the Precambrian-Cambrian boundary in the Yukon Territory, Canada

In the past an ‘explosion’ in diversity and abundance of small shelly fossils and of trace fossils has served to mark the base of the Cambrian. However, no evidence has been presented to prove that

The Placentian Series: appearance of the oldest skeletalized faunas in southeastern Newfoundland

The lowest Cambrian of Avalon, or Placentian Series, is a relatively thick sequence (1,400 m) in southeastern Newfoundland. A newly proposed body fossil zonation supplements an existing trace fossil

Shelly microfossils near the Precambrian–Cambrian boundary, Mackenzie Mountains, northwestern Canada

Our understanding of early metazoan evolution is being revolutionized by recent discoveries of pre-trilobite faunas. A fascinating aspect of this evolution is the appearance and development of

The tommotiid Kelanella and associated fauna from the early Cambrian of southern Montagne Noire (France): implications for camenellan phylogeny

A carbonate bed of the Pardailhan Formation, early Cambrian, southern Montagne Noire (southern France), provided microfossils such as Hyolithellus sp., Torellella cf. mutila and Torellella sp. along

Evolution of 'small shelly fossils' assemblages of the Early Paleozoic

  • D. Zik
  • Geography, Environmental Science
  • 2009
The allegedly sudden appearance of skeletal fossils at the beginning of the Cambrian is a preservational artifact. The most characteristic earliest Cambrian fossil assemblages are calcareous fossils

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

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

Darriwilian (Middle Ordovician) worms of southern Sweden

Abstract The record of scolecodonts (polychaete jaws) from the Ordovician of Sweden is very poor. In this paper, we document a Darriwilian (Middle Ordovician) assemblage recovered from palynological

Paleoecology and distribution of the Early Cambrian rostroconch Watsonella crosbyi Grabau

  • E. Landing
  • Environmental Science, Geography
    Journal of Paleontology
  • 1989
Watsonella crosbyi Grabau, 1900, a senior synonym of Heraultipegma varensalense (Cobbold, 1935) and H. yannense He and Yang, 1982, is the oldest known rostroconch. The species ranges through most of

A pre-trilobite shelly fauna from the White–Inyo region of eastern California and western Nevada

A low-diversity shelly fauna occurs in the Deep Spring Formation of the White–Inyo Mountains of eastern California and in Esmeralda County, Nevada. Although poorly preserved, specimens can be




The genera Tommotia Missarzevskij 1970 (1966) and Camenella Missarzevskij 1966 from the Lower Cambrian Tommotian Stage of the Siberian Platform represent different skeletal parts of the same organism

The Cambrian Horizons of Comley (Shropshire), and their Brachiopoda, Pteropoda, Gasteropoda, etc.

  • E. S. Cobbold
  • Geology
    Quarterly Journal of the Geological Society of London
  • 1920
I. Introduction. The objects of this paper are to define the horizons of the Cambrian system at Comley, to describe and illustrate the species of brachiopoda, pteropoda, and gasteropoda, and to


An unusually well preserved phosphatic fauna has been found in boulders of Lower Cambrian conglomerate from Venenas, on the Skaggenas Peninsula in the Baltic Sea. The fauna is dominated by the

A correlation of Silurian rocks in the British Isles

A discussion of Silurian stratigraphical classification is followed by detailed comments upon the correlation of Llandovery, Wenlock, Ludlow, and post-Ludlow pre-Gedinnian rocks throughout the

Paleozoic Mollusk: Hyolithes

An unusually well-preserved Ordovician fossil from Czechoslovakia shows that the enigmatic paired structures once thought to be outgrowths of the operculum of Hyolithes are really independent


The genus Praecambridium, from the Late Precambrian of South Australia, represents a segmented organism which appears to be related to early trilobites or chelicerates or both. A Late Precambrian

" Lapworthellids from the Lower Cambrian Strenuella Limestone at Comley , Shropshire

  • Palaeontology x

Precambrian palaeozoology . University of Adelaide C , entre for Precambrian Research , Special Paper x , 43 - 52 - - - & WAD ~ , M . 1971 . Praecambridium - - a primitive arthropod

  • Lethaia .
  • 1972

First discovery of LapwortheUa in the lower Cambrian of the Siberian Platform

  • Paleont. Zh