Relationships of the Chimaeriformes and the basal radiation of the Chondrichthyes

@article{Lund2004RelationshipsOT,
  title={Relationships of the Chimaeriformes and the basal radiation of the Chondrichthyes},
  author={Richard Lund and Eileen D. Grogan},
  journal={Reviews in Fish Biology and Fisheries},
  year={2004},
  volume={7},
  pages={65-123}
}
  • R. Lund, E. Grogan
  • Published 1 March 1997
  • Environmental Science
  • Reviews in Fish Biology and Fisheries
The origin and early evolution of the cartilaginous fishes (Chondrichthyes) has been the subject of considerably more debate than of data. The two modern groups, Chimaeriformes and Elasmobranchii, differ so radically in morphology that in the past they have often been considered unrelated -- descended from some remote and unknown common ancestor. The current consensus promotes the Chimaeriformes and Elasmobranchii as sister taxa of the Class Chondrichthyes which are linked by an assemblage of… 

The earliest chimaeriform fish from the Carboniferous of Central Russia

The ancestry of chimaeriform chondrichthyan fishes can be traced back to the Late Triassic (∼220 Ma). To date, only one chimaeriform suborder, the Echinochimaeroidei, has been recognized from the

A symmoriiform chondrichthyan braincase and the origin of chimaeroid fishes

TLDR
The results of a computed tomography analysis of Dwykaselachus, an enigmatic chondrichthyan braincase from the ~280 million year old Karoo sediments of South Africa, reveal preconditions that suggest an initial morpho-functional basis for the derived chimaeroid cranium, and shed new light on the chondRichthyan response to the extinction at the end of the Devonian period.

The early evolutionary history of sharks and shark-like fishes

TLDR
It is proposed that chondrichthyan dermoskeletal characters carry a phylogenetic signal, allowing to interpret the documented diverse types of scale morphogenesis as evidence for a major radiation of chondRichthyan lineages in the Lower Palaeozoic.

The early elasmobranch Phoebodus: phylogenetic relationships, ecomorphology and a new time-scale for shark evolution

TLDR
The first skeletal remains of Phoebodus from the Famennian (Late Devonian) of the Maïder region of Morocco are reported, revealing an anguilliform body, specialized braincase, hyoid arch, elongate jaws and rostrum, complementing its characteristic dentition and ctenacanth fin spines preceding both dorsal fins.

Skull and brain anatomy of Late Carboniferous Sibyrhynchidae (Chondrichthyes, Iniopterygia) from Kansas and Oklahoma (USA)

TLDR
The data presented here show the three-dimensionally preserved braincase of a possible stem-holocephalan as these new specimens share with extant chimaeroids some key neurocranial characters, which may provide means for a comparative study of skull anatomy in Paleozoic representatives of the main two chondrichthyan clades.

A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans

TLDR
A previously undescribed symmoriiform shark, Ferromirum oukherbouchi, from the Late Devonian of the Anti-Atlas is reported, in which the jaw articulation is specialized and drives mandibular rotation outward when the mouth opens, and inward upon closure.

Cochliodonts and chimaeroids: Arthur Smith Woodward and the holocephalians

  • C. Duffin
  • Environmental Science, Geography
    Special Publications
  • 2015
Abstract Fossil chondrichthyan teeth played an important part in the establishment of a scientific understanding of ‘formed stones’. Following a slowly emerging taxonomy, Louis Agassiz presented the

Contribution to the molecular phylogenetic analysis of extant holocephalan fishes (Holocephali, Chimaeriformes)

TLDR
The results indicate that the traditional morphological generic definition of the families Rhinochimaeridae and Chimaera has to be reinvestigated and the time of origin of extant holocephalan taxa is provided.

The systematics of the Mongolepidida (Chondrichthyes) and the Ordovician origins of the clade

TLDR
The present study reassesses mongolepid systematics through the examination of the developmental, histological and morphological characteristics of scale-based specimens from the Upper Ordovician Harding Sandstone and the Upper Llandovery–Lower Wenlock Yimugantawu (Tarim Basin, China), Xiushan (Guizhou Province, China) and Chargat (north-western Mongolia) Formations.

Chondrichthyan microfossils from the Famennian and Tournaisian of Armenia

The assemblages of chondrichthyan microremains from the Famennian of Armenia show great resemblances to those from central iran. particularly, the very rich sample (almost 200 teeth) from the lower
...

References

SHOWING 1-10 OF 143 REFERENCES

On the Structure and Affinities of the Carboniferous Cochliodont Helodus simplex

TLDR
It is concluded that the Cochliodonts are almost certainly closely related to the ancestors of the Holocephali, and the relatively unspecialized condition of the teeth gives support to the view that the holostylic condition ofThe jaws is primitive for the group.

THE ANATOMY OF MENASPIS ARMATA AND THE PHYLETIC AFFINITIES OF THE MENASPID BRADYODONTS

TLDR
The two best preserved specimens of the Upper Permian fish Menaspis armata have been reinvestigated, resulting in new interpretations of a variety of anatomical features, finding that the menaspids cannot possibly be closely related to the chimaeriforms, nor to any of those better known bradyodonts with which they were previously classified.

NEW CHONDRICHTHYES FROM THE MAZON CREEK FAUNA (PENNSYLVANIAN) OF ILLINOIS

On the Carboniferous shark Tristychius arcuatus Agassiz from Scotland

  • J. R. F. Dick
  • Environmental Science
    Transactions of the Royal Society of Edinburgh
  • 1978
Synopsis Skeletal remains of Tristychius arcuatus commonly occur in ironstone nodules from the Scottish Upper and Lower Oil Shale Groups. This material is clearly distinguishable from the small shark

The structure of the holocephalan head and the relationships of the Chondrichthyes

The interrelationship of the chondrichthyan subclasses is evaluated based on divergences in the nature of the suspensorium, the preorbital cranial anatomy, the distribution of major venous sinuses

New petalodonts (Chondrichthyes) from the Upper Mississippian Bear Gulch Limestone (Namurian E2b) of Montana

TLDR
The dental morphology and histology of the clade containing Tanaodus, Harpacodus, and Lisgodus support a hypothesis of sister group relationships with the Petalodontiformes as restricted.

Diplodoselache woodi gen. et sp. nov., an early Carboniferous shark from the Midland Valley of Scotland

  • J. R. F. Dick
  • Environmental Science, Geography
    Transactions of the Royal Society of Edinburgh: Earth Sciences
  • 1981
ABSTRACT A new fossil elasmobranch from the Lower Carboniferous Oil Shale groups (Viséan) of the Edinburgh area shows a mosaic of characters typical of at least two groups of early sharks. Its most

II - The Acanthodian fishes

TLDR
The Acanthodian fishes form one of the most sharply demarcated and recognizable groups of vertebrate fossils, and their characteristic squamation of square, exceedingly minute ganoid scales, distinguish them sharply from all other fishes, and enable even fragmentary specimens to be recognized without doubt.

Histologic Studies of Ostracoderms, Placoderms and Fossil Elasmobranchs

TLDR
Dermal jaw‐elements with quite the same developmental and structural features as those of brachythoracid or holonematid arthrodires are unknown in other fishes, including elasmobranchs.

On the Dentition of the Petalodont Shark, Climaxodus

  • A. Woodward
  • History
    Quarterly Journal of the Geological Society of London
  • 1919
The dentition of the Petalodont sharks is still very imperfectly known. It has hitherto been satisfactorily observed only in the highly-specialized Janassa bituminosa from the Upper Permian
...