Viviparity and Intrauterine Feeding in a New Holocephalan Fish from the Lower Carboniferous of Montana

  title={Viviparity and Intrauterine Feeding in a New Holocephalan Fish from the Lower Carboniferous of Montana},
  author={Richard Lund},
  pages={697 - 699}
  • R. Lund
  • Published 8 August 1980
  • Medicine
  • Science
A new species of Lower Carboniferous holocephalan chondrichthyan, Delphyodontos dacriformes, is described from two fetal specimens. The well-developed slashing and piercing dentition, enlargement of the abdominal region, and fecal material indicate the probable evolution of intrauterine oophagy and viviparity in Paleozoic Chondrichthyes. 

Reproduction in Middle Triassic actinopterygians; complex fin structures and evidence of viviparity in fossil fishes

New well-preserved specimens of Peltopleurus lissocephalus Brough, 1939, a small actinopterygian fish of the Alpine Middle Triassic, are described. Some of them show a highly modified anal fin, with

Reproduction in five sympatric batoid species (Family Urolophidae) from south-eastern Australia

This PhD determines the reproductive biology of five stingaree species caught as bycatch from south-eastern Australian commercial fisheries for fisheries stock assessments, ecological risk

Chondrichthyan life history styles as revealed by the 320 million years old Mississippian of Montana

  • R. Lund
  • Environmental Science
    Environmental Biology of Fishes
  • 2004
Repeated fluctuations in environmental parameters through time, producing fine-scale spatial and temporal non-equilibrium, were probably ultimately responsible for the maintenance of this broad-scale high diversity community.

Coelacanths from the Middle Triassic Luoping Biota, Yunnan, South China, with the Earliest Evidence of Ovoviviparity

The fossil record of coelacanths is patchy, with very few taxa known from the Triassic of Asia. We report here two new genera and species of coelacanths from the Luoping Biota, a recently found site

Superfoetative viviparity in a Carboniferous chondrichthyan and reproduction in early gnathostomes

The fossilized remains of two specimens of Harpagofututor volsellorhinus from the Upper Mississippian of Montana now provide the first direct evidence of matrotrophic live birth in a Palaeozoic chondrichthyan and of superfoetation in an extinct fish.

A preliminary note of egg-case oviparity in a Devonian placoderm fish

Six enigmatic fossils from the Famennian (Devonian) Cleveland Shale in Ohio, U.S.A., are interpreted here as arthrodiran (Placodermi) egg cases, representing the first record for a non-chondrichthyan producer and suggesting external fertilization as the primitive gnathostome reproductive mode.

Viviparity: The Maternal-Fetal Relationship in Fishes

The maternal-fetal trophic relationships in each of the major groups of fishes are systematically reviewed and Pertinent anatomical, histological, ultrastructural, developmental, physiological, and biochemical studies are considered.

Earliest fossil evidence for protective pigmentation in an actinopterygian fish

These markings provide the earliest evidence in primitive fossil actinopterygians for (respectively) countershading and the use of disruptive markings to break up the body outline, two of the most common protective coloration strategies in Recent fishes.

The taphonomy of a carboniferous lagerstätte : the invertebrates of the Bear Gulch Limestone Member

  • N. Thomas
  • Geography, Environmental Science
  • 2004
The Bear Gulch Limestone Member is proposed herein as the new name for the Bear Gulch Beds of central Montana, USA. This member contains articulated and exceptionally well preserved fossils.

Additions and amendments to the classification of reproductive styles in fishes

  • E. Balon
  • Biology
    Environmental Biology of Fishes
  • 2004
SynopsisThe guild concept is explained to represent peaks in the landscape of reproductive styles, which respond to the ‘altricial ⇄ precocial principle’ caused by the processes of heterochrony and



Fetal Maintenance and Its Evolutionary Significance in the Amphibia: Gymnophiona

It is concluded that the species-specific fetal dentition is functional in obtaining nutrition in the oviduct, in contrast to previous suggestions.

The phylogeny of the chimaeroids

  • C. Patterson
  • Biology
    Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
  • 1965
There is found to be strong evidence that the chimaeroids are derived, through the Jurassic myriacanthids and allied forms, from a Palaeozoic group which includes the Permian Menaspis and whose most primitive known genus is Deltoptychius.

Latimeria, the Living Coelacanth, Is Ovoviviparous

It is concluded that Latimeria is ovoviviparous, a gravid female containing five advanced young, averaging 317.8 millimeters long, which suggests that gestation may require more than a year not an unexpected length of time in view of the tremendous size of the ripe egg.

Freshwater Fishes of the World (Viking

  • New York,
  • 1965

Deutsch for discussions; N. Inestrosa and J. V. Luco for suggestions in the preparation of the manuscript

    Schultz for permission to work on their land, and W. Lund for preparing the illustrations. Supported by grants from the Carnegie Museum of Natural History and by NSF grants BMS

      Miller for providing References and Notes

        These antiserums were provided by

          Geological and paleoecological aspects of the Bear Gulch Limestone are discussed in Proc

          • Ninth Int. Carbonif. Congr.: Paleontol
          • 1977