The cephalopod macrosystem: A historical review, the present state of knowledge, and unsolved problems: 2. Classification of nautiloid cephalopods

@article{Shevyrev2006TheCM,
  title={The cephalopod macrosystem: A historical review, the present state of knowledge, and unsolved problems: 2. Classification of nautiloid cephalopods},
  author={A. A. Shevyrev},
  journal={Paleontological Journal},
  year={2006},
  volume={40},
  pages={46-54}
}
  • A. Shevyrev
  • Published 2006
  • Biology
  • Paleontological Journal
Major classifications of nautiloid cephalopods are critically reviewed. It is suggested that this cephalopod group is subdivided into 5 subclasses and 17 orders: Ellesmeroceratoidea (including the orders Plectronocerida, Protactinocerida, Yanhecerida, and Ellesmerocerida), Endoceratoidea (including the orders Endocerida and Intejocerida), Actinoceratoidea (including the order Actinocerida), Nautiloidea (with the orders Basslerocerida, Tarphycerida, Lituitida, Discosorida, Oncocerida, and… 

The cephalopod macrosystem: A historical review, the present state of knowledge, and unsolved problems: 3. Classification of Bactritoidea and Ammonoidea

TLDR
A new classification is proposed in which Bactritoidea and Ammonoidea are considered as subclasses, and a single order, Bactritida is included.

High-level classification of the nautiloid cephalopods: a proposal for the revision of the Treatise Part K

TLDR
The scheme proposed here utilizes the form of muscle attachment scars as a diagnostic feature at subclass level; other features (including siphuncular structures and cameral deposits) are employed at ordinal level; this scheme has the advantage of relative simplicity and presents a balanced approach which reflects the considerable morphological diversity and phylogenetic longevity of the nautiloid cephalopods.

Asselian-Sakmarian Nautiloids of the Shakh-Tau Reef (Bashkortostan)

This paper contains the first descriptions of an assemblage of non-ammonoid cephalopods from the Upper Asselian-Lower Sakmarian limestones of the Shakh-Tau reef. In this paper 16 species of 15 genera

Carboniferous deposits of northern Sierra de Tecka, central-western Patagonia, Argentina: paleontology, biostratigraphy and correlations

A narrow upper Paleozoic belt crops out in the northern tip of Sierra de Tecka through the Quebrada de Güera-Peña (Patagonia, Argentina). There, black shales of the Pampa de Tepuel Formation contain

Cephalopod embryonic shells as a tool to reconstruct reproductive strategies in extinct taxa

An exhaustive study of existing data on the relationship between egg size and maximum size of embryonic shells in 42 species of extant cephalopods demonstrated that these values are approximately

Cephalopods and Paleoenvironments of the Fort Cassin Formation (Upper Lower Ordovician), Eastern New York and Adjacent Vermont

Abstract The dramatic late Early Ordovician radiation of cephalopods on tropical paleocontinents is illustrated by the diverse fauna (21 genera, 30 species) of the Fort Cassin Formation (Floian and

Eigenshape analysis of ammonoid sutures

TLDR
The pattern of data obtained from many different ammonoid species, as plotted on eigenshape axes in the morphospace constructed based on y-coordinate data, reveals a plesiomorphic aspect of suture shape in some phylloceratine species with respect to other ammonitids.

References

SHOWING 1-10 OF 20 REFERENCES

Notes on the phylogeny of the nautiloidea

TLDR
Critical notes on the monograph “Phylogeny of the Nautiloidea” by J. Dzik (1984), especially with respect to cephalopod material from the Lower Palaeozoic of Bohemia are presented.

Connecting ring structure and its significance for classification of the orthoceratid cephalopods

The connecting ring in orthoceratids is composed of two calcified layers: an outer spherulitic-prismatic and an inner calcified-perforate. The spherulitic-prismatic layer is a direct continuation of

Revision of Middle Ordovician orthoceratacean nautiloids from Baltoscandia

TLDR
It is shown that the endosiphuncular deposits of the Middle Ordovician orthoceratacaceans are highly variable and widespread in the apical parts of the phragmocone.

Remarks on the anatomy of recent and fossil Cephalopoda : with description of the minute shell structure of belemnoids

Remarks on the anatomy of recent and fossil Cephalopoda : with description of the minute shell structure of belemnoids

Weichteile ectocochleater paläozoischer Cephalopoden in Röntgenaufnahmen und ihre paläontologische Bedeutung

ZusammenfassungRöntgenaufnahmen von ectocochleaten Cephalopoden aus den mitteldevonischen Wissenbacher Schiefern erlaubten erstmals Beobachtungen an pyritisierten Weichteilen von Orthoceraten,

Characterization of actinoceratoid cephalopods by their siphuncular structure

TLDR
The described structural type of the connecting rings, together with well-developed annular endosiphuncular deposits, are here considered as characteristic for actinoceratoids.

SALTATIONS IN NAUTILOID COILING

This paper is devoted to a critical re-examination of an old and almost a traditional concept which is usually encountered in elementary courses in paleontology. It has long been postulated that the

The Subcommission on Cambrian Stratigraphy: the status quo

Following proposals accepted at the Norden International Geological Congress (IGC) at Copenhagen in 1960, the Subcommission on Cambrian Stratigraphy (SCS) was established in 1961 with the late Sir