The nautiloid cephalopods: a strange success

  title={The nautiloid cephalopods: a strange success},
  author={Charles Hepworth Holland},
  journal={Journal of the Geological Society},
  pages={1 - 15}
  • C. H. Holland
  • Published 1 January 1987
  • Environmental Science
  • Journal of the Geological Society
The origin of the cephalopods from the Monoplacophora is briefly considered. The first rare Upper Cambrian Plectronoceras are now known to be succeeded by a later Cambrian radiation involving the Plectronoceratida, Ellesmeroceratida, and two other orders, all well documented from Chinese occurrences. The greatest success of the nautiloid cephalopods came in the Ordovician Period with three evolutionary pulses in the Tremadoc, Arenig, and later Ordovician. Three particular Palaeozoic problems… 

Endocerids: suspension feeding nautiloids?

  • A. Mironenko
  • Environmental Science, Geography
    Historical Biology
  • 2018
A new hypothesis is proposed and debated: according to it, the endocerids were planktotrophic cephalopods and the largest of them were giant suspension feeders.

An Ordovician nectocaridid hints at an endocochleate origin of Cephalopoda

A new nectocaridid is document from the Whetstone Gulf Formation, extending the group's range into the Late Ordovician and indicating a trend towards increased metabolic efficiency through the course of Cambrian–Ordovician evolution.

Epizoic Bryozoans on Cephalopods Through the Phanerozoic: A Review

Cephalopods have a long geological history ranging from the Cambrian to the Recent (Holland 1987; Benton 1993; Kröger et al. 2011) and have provided substrates for many encrusting skeletobionts (see

The origins of cephalopod body plans: A geometrical and developmental basis for the evolution of vertebrate-like organ systems

The cephalopod body plans are characterized, set against those of the other bilaterians, in the light of recent data from paleontology, embryology, and molecular gene expression patterns to provide a review and new interpretation with an emphasis on the topographic transition of the soft parts that is shaped by a shared concentric circle or ovoid pattern in the embryos and adults of extant or fossil molluscs.

Some observations on bactritid cephalopods

The Middle Ordovician genus Eobactrites was probably the first representative of the Bactritida and there is a definite record in the Silurian of the Czech Republic and a possible oc- currence in Northern England.

A Review of Volkhovian and Kundan (Arenig-Llanvirn) Nautiloids from Sweden

Well preserved nautiloid cephalopods dominate diverse macrofossil assemblages in early and mid Ordovician platform carbonates across Sweden (the so-called ‘Orthoceratite Limestone’ lithofacies).

Evolution of the cephalopod head complex by assembly of multiple molluscan body parts: Evidence from Nautilus embryonic development

The results demonstrate that the embryonic organs exhibit body plans that are primarily bilateral and antero‐posteriorly elongated at stereotyped positions, and suggest that extensions of the collar‐funnel compartment and free epidermal folds derived from multiple topological foot regions may play an important role in forming the head complex, which is thought to be an important feature during the body plan transition.

Cephalopod Hox genes and the origin of morphological novelties

Developmental expression patterns for eight out of nine Hox genes in the Hawaiian bobtail squid Euprymna scolopes are examined by whole-mount in situ hybridization, showing that Hox orthologues have been recruited multiple times and in many ways in the origin of new cephalopod structures.

Ancestry, Origin and Early Evolution of Ammonoids

In order to put the origin of the Ammonoidea into the broader evolutionary context, this work reviews the hypothesis on theorigin of cephalopods in general, the originof bactritids as well as the origin and major morphological changes that occurred until the early evolution of ammonoids.

Recent growth of nautiloid and ammonite taxonomy

Linnean binomials should be used to reflect personal views about the extent of intraspecific variation of each species to continue the specimen by specimen description of these fossils, by reducing the importance of divergent species concepts.



The bearing of the new Late Cambrian monoplacophoran genus Knightoconus upon the origin of the Cephalopoda

Hypothetical reconstructions of molluscan anatomy support the notion that cephalopods may have been derived directly from a hypseloconid having a high, slightly curved, multiseptate, bilaterally symmetrical shell, by the subsequent development of a siphuncle.

Radula und Fangarme beiMichelinoceras sp. aus dem Silur von Bolivien

New finds of michelinoceratid cephalopods from the Kirusillas-Shale (Ludlow/Silurian) of Ushpa-Ushpa in the Eastern Cordillera of the Bolivian Andes reveal parts of the radula and imprints of arms

Biological and stratigraphical significance of the Silurian nautiloid Aptychopsis

Turek, Vojtach 1978 04 15: Biological and stratigraphical significance of the Silurian nautiloid Circular or elliptical structures described as the genus Aptychopsis Barrande 1872 (and mostly

The boundary between the Silurian Cyrtograptus and Colonus Shales in Skåne, southern Sweden

Abstract After a historical review of the concept of the Cyrtograptus and Colonus Shales and the transition between these units, the rocks exposed in the Ostra Odarslov quarry, east of Lund, are

The Middle Cambrian metazoan Wiwaxia corrugata (Matthew) from the Burgess Shale and Ogygopsis Shale, British Columbia, Canada

While the possibilities of convergence cannot be eliminated, there appears to be a significant similarity between Wiwaxia and molluscs that suggests a related derivation from a turbellarian ancestor.

More Mississippian belemnites

New Mississippian belemnites comprise 3 new genera, containing 5 named and one unnamed new species. Eobelemnites? sp. is from the rocks of Chester age of Alabama. Other species are based upon 8

A small coleoid cephalopod with soft parts from the lower Devonian discovered using radiography

During the past 50 years, X-ray examinations have greatly increased our knowledge of fossils. Modern radiographic methods, X-ray tubes with fine focal spots, high-resolution films and optimal

New data on the jaw apparatus of fossil cephalopods

A newly discovered fossil cephalopod jaw apparatus that may belong to Permian representatives of the Endocochlia is described. Permorhynchus dentatus n. gen. n. sp. is established on the basis of


yamai that I have once called it A. cfr. yokoyamai (1954). According to K. MATSUSHITA. (1949), A. yokoyamai occurs at various places in Northwestern Kyushu in some Palaeogene formations and its close

VI.—On the Carboniferous Nautiloids: Orthocera gigantea J. Sowerby and Allied Forms

  • J. Turner
  • Geology
    Transactions of the Royal Society of Edinburgh
  • 1952
The type material of Orthocera gigantea J. Sowerby 1819 is refigured and redescribed and the material is found to be referable to the genus Rayonnoceras Croneis and to embrace a number of species.