Vertebral column and associated elements in dipnoans and comparison with other fishes: Development and homology

@article{Arratia2001VertebralCA,
  title={Vertebral column and associated elements in dipnoans and comparison with other fishes: Development and homology},
  author={Gloria Arratia and Hans-Peter. Schultze and Jorge Casciotta},
  journal={Journal of Morphology},
  year={2001},
  volume={250}
}
A vertebral column consisting of a persistent notochord and ossified arcocentra is the primitive condition for Gnathostomata; it still persists in primitive actinopterygians and sarcopterygians. Advanced actinopterygians and sarcopterygians develop numerous types of centra that include, among others, the presence of holocentrum, chordacentrum, and autocentrum. The chordacentrum, a mineralization or calcification of the fibrous sheath of the notochord, is only found in actinopterygians, whereas… 
Evolution and development of the synarcual in early vertebrates
TLDR
A survey of placodermsynarcuals shows that taxa such as Materpiscis and Cowralepis are particularly informative because perichondral ossification occurs prior to synarcual fusion such that individual vertebral elements can be identified.
Development of the Synarcual in the Elephant Sharks (Holocephali; Chondrichthyes): Implications for Vertebral Formation and Fusion
TLDR
The observations on synarcual development in three major groups of early jawed vertebrates indicate that fusion involves heterotopic cartilage and perichondral bone/mineralised cartilage developing outside the regular skeleton.
A Microanatomical and Histological Study of the Postcranial Dermal Skeleton of the Devonian actinopterygian Cheirolepis canadensis
TLDR
New data about the morphology and the histological structure of scales, fulcra, and fin-rays in the Devonian actinopterygian Cheirolepis canadensis are presented through SEM and photomicroscopy and articular processes between lepidotrichia are described that are reminiscent of, and plausibly homologous with, the peg-and-socket articulations between the scales.
Segmentation and fusion on the midline: Basibranchial homologies in cypriniform fishes
TLDR
In Cobitis striata, the basihyal cartilage and anterior copula form as separate cartilages and remain distinct throughout development with a prominent gap between the basithyal and most anterior basibranchial, which the authors interpret as loss of basIBranchial 1.
The caudal skeleton of basal teleosts, its conventions, and some of its major evolutionary novelties in a temporal dimension
The present study represents an evaluation of the current knowledge of the caudal endoskeleton of basal fossil and extant teleosts and gives new information on the origin, development and homology of
The Synarcual of the Little Skate, Leucoraja erinacea: Novel Development Among the Vertebrates
TLDR
It is shown that the skate synarcual is a complex composite element which develops from a hollow, continuous cartilaginous element devoid of any vertebral centra anterior to the pectoral girdle, and fusion/remodeling of initially distinct vertebrae posteriorly.
Interrelationship and modularity of notochord and somites: a comparative view on zebrafish and chicken vertebral body development
TLDR
This short review compares the development of vertebral bodies in chicken and teleost fish and suggests that this developmental module is physically grouped in the teleost notochord but spatially subdivided in the chick where the medial PSM is responsible for vertebral body formation.
Complexities of Early Teleostei and the Evolution of Particular Morphological Structures through Time
TLDR
The monophyly of the total group Teleostei, which now includes Triassic pholidophorids, is supported by numerous synapomorphies, such as autosphenotic without small dermal component; unpaired vomer (in adults); complete ring of two sclerotic bones oriented anterior and posterior to orbit; and a hypural articulating with a few caudal rays—with further transformations in more advanced teleosts.
New insights into the complex structure and ontogeny of the occipito‐vertebral gap in barbeled dragonfishes (Stomiidae, Teleostei)
TLDR
It is shown that only in Chauliodus, Eustomias and Leptostomias gladiator vertebral centra are actually lost, with their respective neural arches and parapophyses persisting.
The homology and function of the lung plates in extant and fossil coelacanths
TLDR
The point-for-point structural similarity of the plates in extant and fossil coelacanths supports their probable homology and, consequently, that of the organ they surround and questions the previous interpretations of the fatty organ as a component of the pulmonary complex of Latimeria.
...
...

References

SHOWING 1-10 OF 71 REFERENCES
Reevaluation of the caudal skeleton of some actinopterygian fishes: II. Hiodon, Elops, and Albula
TLDR
The composition of the caudal skeleton of fossil teleosts and the ontogeny of that of Hiodon, Elops, and Albula corroborate a one‐to‐one relationship of ural centra with these dorsal and ventral elements.
Palatoquadrate and its ossifications: Development and homology within osteichthyans
TLDR
From the single‐unit pattern, separate autopalatine, metapterygoid, and quadrate evolve in parallel in the three teleostomian subgroups, therefore, it is necessary to distinguish between actinopterygian and actinistian autopal atines and among acanthodian, actinipterygian, and act inistian metapterygoidea and quadrates.
Structure of the vertebral column in Eusthenopteron foordi Whiteaves
X-ray photographs of part of the vertebral column of Eusthenopteron foordi Whiteaves show that each vertebral segment consists of (1) a centrum made up of two thin lateral concentric half rings; (2)
Reevaluation of the caudal skeleton of actinopterygian fishes: I. Lepisosteus and Amia
TLDR
Lepisosteus and Amia possess a polyural caudal skeleton with a one‐to‐one relationship between ural centra and hypurals; the number of hypural may be reduced in adult Lepisostspecies.
The composition of the caudal skeleton of teleosts (Actinopterygil: Osteichthyes)
TLDR
This preliminary research demonstrates that a detailed ontogenetic interpretation of the vertebral centra and of the caudal skeleton of different teleosts may be useful tools for further interpretations of teleostean interrelationships.
THE HOMOLOGIES OF THE LABYRINTHODONT CENTRUM
  • A. Panchen
  • Environmental Science
    Evolution; international journal of organic evolution
  • 1967
TLDR
The nature of the vertebrae has long been used to define the major taxa within the Labyrinthodontia and to assign a place to the group within the classification of the Amphibia and it is now fairly generally agreed that the rhachitomous vertebra represents the primitive labyrinthodont condition.
The urohyal: Development and homology within osteichthyans
TLDR
A new structure, the parurohyal, arises as a double ossification of the tendon of the sternohyoideus muscle in siluroids; during ontogeny an anterodorsal crest or cup‐like structure derives from the anterior basibranchial region and the tendon bone; therefore, the arthrohyal is compound in origin.
Reevaluation of the caudal skeleton of certain actinopterygian fishes: III. Salmonidae. Homologization of caudal skeletal structures
The ontogenetic development of caudal vertebrae and associated skeletal elements of salmonids provides information about sequence of ossification and origin of bones that can be considered as a model
Osteology and Phylogenetic Relationships of Fossil and Recent Paddlefishes (Polyodontidae) with Comments on the Interrelationships of Acipenseriformes
ABSTRACT The comparative osteology and phylogenetic relationships of fossil and living paddlefishes (Polyodontidae) are investigated in detail for the first time. This peculiar, poorly known group is
Comparative ultrastructure of the cellular components of the unconstricted notochord in the sturgeon and the lungfish
TLDR
The cellular ultrastructure of the notochord was examined in the shortnose sturgeon, Acipenser brevirostratus, and in the African lungfish, Protopterus annectens to better understand the function of this organ.
...
...