The early Cambrian helcionelloid mollusc Anabarella Vostokova

@article{Gubanov2003TheEC,
  title={The early Cambrian helcionelloid mollusc Anabarella Vostokova},
  author={Alexander P. Gubanov and John S. Peel},
  journal={Palaeontology},
  year={2003},
  volume={46}
}
One of the oldest known helcionelloid molluscs, Anabarella Vostokova, is redescribed on the basis of type material from the lower Cambrian of north Siberia. Published records of the type species, Anabarella plana Vostokova, show a very wide range in morphology, but studies of variation through ontogeny and in taphonomy confirm assignment to a single variable species. Other described species are reviewed. 
A new problematic Early Ordovician univalve mollusc from France
Lamaureriella vizcainoi gen. et sp. nov., from the Montagne Noire region of southern France, is a coiled, laterally compressed, bilaterally symmetrical mollusc in which prominent folds in the
A problematic cap-shaped metazoan from the Lower Cambrian of Estonia
Abstract The cap-shaped Scenella(?) discinoides Schmidt, 1888 is redescribed on the basis of the type material from the Lower Cambrian of Estonia and assigned to a new genus Estoniadiscus. Shell
Lower Cambrian helcionelloid molluscs from Estonia
Abstract Pleurotomaria? kunda Öpik, 1926 was correctly referred to the genus Aldanella Vostokova, 1962 more than 30 years ago, although its affinities are still debated. It has been described by
Pseudomyona from the Cambrian of North Greenland (Laurentia) and the early evolution of bivalved molluscs
logical studies of present day bivalves that the Ordo­ vician–Recent members of the Class Bivalvia Linnaeus, 1758 form a monophyletic group, although some relation­ ships within the group remain
Shell microstructures of the helcionelloid mollusc Anabarella australis from the lower Cambrian (Series 2) Xinji Formation of North China
Although various types of shell microstructures are documented from Cambrian molluscs, the precise organization and mineralogical composition of Terreneuvian molluscs are relatively unknown.
Totoralia, a new conical-shaped mollusk from the middle Cambrian of western Argentina
TLDR
The new genus Totoralia from the late middle Cambrian of El Totoral (Mendoza Province, western Argentina) is described, a delicate, high, bilaterally symmetrical cone with a sub-central apex and five to seven prominent comarginal corrugations that resembles the Cambrian helcionellids Scenella and Palaeacmaea.
Early Cambrian Mollusc Watsonella crosbyi: A Potential GSSP Index Fossil for the Base of the Cambrian Stage 2
The mollusc Watsonella crosbyi was studied on the basis of material from the lower Cambrian Dahai Member of the Zhujiaqing Formation in eastern Yunnan, China and the Pestrotsvet Formation of the
Mollusks from the upper Shackleton Limestone (Cambrian Series 2), Central Transantarctic Mountains, East Antarctica
Abstract. An assemblage of Cambrian Series 2, Stages 3–4, conchiferan mollusks from the Shackleton Limestone, Transantarctic Mountains, East Antarctica, is formally described and illustrated. The
An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia)
  • J. S. Peel
  • Environmental Science, Geography
    Journal of Paleontology
  • 2021
Abstract. An assemblage of 50 species of small shelly fossils is described from Cambrian Series 2 (Stage 4) strata in North Greenland, the present day northernmost part of the paleocontinent of
...
...

References

SHOWING 1-10 OF 41 REFERENCES
Oelandiella, the earliest Cambrian helcionelloid mollusc from Siberia
The helcionelloid molluscs Oelandiella korobkoviO. sibirica Vostokova are redescribed on the basis of type material from the lowest Cambrian of northern Siberia. Oelandiella is reinstated as a
Paleoecology and distribution of the Early Cambrian rostroconch Watsonella crosbyi Grabau
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
Biostratigraphy of the Vendian-Cambrian beds and the lower Cambrian boundary in Siberia
Abstract General agreement exists that the position of the base of the Cambrian (Precambrian–Cambrian boundary) should coincide with a biostratigraphic marker that can be widely traced and is linked
Age constraints from small shelly fossils on the early Cambrian terminal Cadomian Phase in Iberia
Abstract The records of biotic and biogeochemical events around the Proterozoic-Cambrian transition are well preserved in sedimentary rock successions in Iberia. Until recently, sparsely
Cladistic perspectives on early bivalve evolution
TLDR
Parsimony analysis suggests derivation of the Bivalvia from monoplacophorans rather than from rostroconchs, and indicates that a phylogenetic classification of the Heteroconchia can be achieved by erecting the superorder Nuculaniformii nov.
The Placentian Series: Appearance of the Oldest Skeletalized Faunas in Southeastern Newfoundland
ABsTRAcr-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
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
On some Undescribed Fossils from the Menevian Group
  • H. Hicks
  • Geology
    Quarterly Journal of the Geological Society of London
  • 1872
In continuation of the descriptions of the fossils from the Menevian group which have at different times appeared in the ‘Journal’ of the Geological Society, I propose now to add those forms, which
Oceanic anoxia at the Precambrian-Cambrian boundary
The Precambrian-Cambrian (PC-C) boundary separates fossils representing two discrete evolutionary phases: the Neoproterozoic soft-bodied Ediacarian biotas and Cambrian small shelly faunas. The
Integrated chemo- and biostratigraphic calibration of early animal evolution: Neoproterozoic–early Cambrian of southwest Mongolia
Abstract Five overlapping sections from the thick Neoproterozoic to early Cambrian sediments of western Mongolia were analysed to yield a remarkable carbon-isotope, strontium-isotope and small
...
...