The first articulated skeleton of Dendrerpeton acadianum (Temnospondyli, Dendrerpetontidae) from the Lower Pennsylvanian locality of Joggins, Nova Scotia, and a review of its relationships

  title={The first articulated skeleton of Dendrerpeton acadianum (Temnospondyli, Dendrerpetontidae) from the Lower Pennsylvanian locality of Joggins, Nova Scotia, and a review of its relationships},
  author={Robert B. Holmes and Robert Lynn Carroll and Robert R. Reisz},
  journal={Journal of Vertebrate Paleontology},
ABSTRACT The discovery of the first articulated, well-preserved specimen of Dendrerpeton acadianum makes it possible to describe this taxon completely for the first time, and reassess its phylogenetic relationships. Large, laterally facing orbits, large, rounded squamosal embayments, absence of lateral line sulci, a short presacral column of only 24 vertebrae that is less than twice the length of the skull, and large stout limbs all suggest a terrestrial lifestyle distinct from the aquatic and… 

Cranial anatomy and systematics of Dendrerpeton cf. helogenes (Tetrapoda, Temnospondyli) from the Pennsylvanian of Joggins, revisited through micro‐CT scanning

The Joggins Fossil Cliffs constitute an upper Carboniferous (Pennsylvanian) locality in Nova Scotia (Canada). This site, known for the rich record of fossils preserved in the palaeoenvironment in

A New Trematopid Amphibian (Temnospondyli: Dissorophoidea) from the Upper Pennsylvanian of Western Pennsylvania: Earliest Record of Terrestrial Vertebrates Responding to a Warmer, Drier Climate

ABSTRACT Fedexia striegeli, a new genus and species of trematopid temnospondyl amphibian, is described on the basis of a single specimen that includes the greater portion of the skull and articulated

The Scottish Carboniferous tetrapod Crassigyrinus scoticus (Lydekker)—cranial anatomy and relationships

  • J. Clack
  • Biology
    Transactions of the Royal Society of Edinburgh: Earth Sciences
  • 1997
A new reconstruction of the skull of Crassigyrinus scoticus (Lydekker) is provided, and a revised interpretation of the naris shows it in most respects to be like that of other Carboniferous tetrapods, lacking both an anterior tectal and a lateral rostral.

A new stereospondyl from the German Middle Triassic, and the origin of the Metoposauridae

Neither plagiosaurids nor brachyopoids and rhytidosteids are closely related to this ‘trematosaurian’ monophylum, although these taxa share a range of homoplasies.

A New Specimen of the Temnospondyl Australerpeton cosgriffi from the Late Permian of Brazil (Rio Do Rasto Formation, Paraná Basin): Comparative Anatomy and Phylogenetic Relationships

Australerpeton cosgriffi represents one of the first stereospondyls, and the oldest long-snouted member of the group, and dispersion and diversification of this clade appears to have happened before the Permo—Triassic boundary.

The cranial morphology of the temnospondyl Australerpeton cosgriffi (Tetrapoda: Stereospondyli) from the Middle–Late Permian of Paraná Basin and the phylogenetic relationships of Rhinesuchidae

The cranial anatomy of Australerpeton cosgriffi is reviewed, providing a comparative redescription, new anatomical data and previously unrecognized characters that are useful in helping to understand the diversification of the stereospondyls during the Middle/Late Permian of Gondwana.

The putative lissamphibian stem-group: phylogeny and evolution of the dissorophoid temnospondyls

  • R. Schoch
  • Biology, Environmental Science
    Journal of Paleontology
  • 2018
An inclusive phylogenetic analysis of dissorophoids gives new insights into the large-scale topology of relationships, including a basal dichotomy between the large, heavily ossified Olsoniformes and the small salamander-like Amphibamiformes.

Monophyly and affinities of albanerpetontid amphibians (Temnospondyli; Lissamphibia)

Albanerpetontids are better interpreted not as aberrant caudates, but as a distinct clade of lissamphibians in which numerous apomorphies are superimposed upon an otherwise primitive lissampshibian body plan.


The sister‐group relationship of Uruyiella and Laidleria suggests that a ghost lineage for the latter genus extends down into the earliest Triassic and perhaps even into the Late Permian, which in turn would suggest survivorship of the Laysleriidae through the Permo‐Triassic extinction event.


In the present analysis, Micromelerpeton is the most basal offshoot of the dissorophoids, followed by a grade towards amphibamids formed by the following successive sister groups (from the base crownwards): (1) the trematopids, (2) Ecolsonia, and (3) the Dissorophidae, the latter being the sister taxon of all analyzed Amphibamids.



A new trematopsid amphibian (Temnospondyli: Dissorophoidea) from the Lower Permian of Texas

Phonerpeton is interpreted as a small, lightly built, terrestrially adapted carnivore, and is distinguished by the presence of a semilunar curvature of the squamosal, domed parietals, an unossified sphenethmoid, long and slender mid-dorsal ribs, and a radius with a semicircular cross section.

On the Amphibian Crassigyrinus scoticus Watson from the Carboniferous of Scotland

A case is made for the 'sister-group' relation of Crassigyrinus to the anthracosauroids and a cladogram presented of the subgroups involved; it is, however, difficult to make a case for the close relationship of CrASSIGyrinus and the Seymouriamorpha and the closeness of relationship of the latter to anthracosaurs is questioned.

The cranial morphology and taxonomy of the saurerpetontid Isodectes obtusus comb. nov. (Amphibia: Temnospondyli) from the Lower Permian of Texas

Five saurerpetontid temnospondyl amphibian specimens from the Lower Permian Arroyo Formation of Baylor County, Texas are redescribed under the binomen Isodectes obtusus comb, with some of the resemblances described by Watson appearing to be artefacts of crushing of an individual specimen.

The Carboniferous Amphibian Proterogyrinus scheelei Romer, and the Early Evolution of Tetrapods

Proterogyrinus scheelei Romer, from the Upper Mississippian of Greer, West Virginia, is one of the earliest known members of the amphibian infraorder Embolomeri, and has no undisputed synapomorphies with reptiles either, making it impossible to support close relationship between the two groups.

Cranial Morphology of the Loxommatidae (Amphibia: Labyrinthodontia)

It is concluded that the antorbital vacuity, which characterizes the Loxommatoidea, evolved as a bulging hole for a large pterygoideus muscle associated with a piscivorous habit and a kinetic inertial system of jaw closure.

Studien über die Branchiosauridae (Amphibia: Temnospondyli) 1. Neue und wenig bekannte Arten aus dem mitteleuropäischen Rotliegenden (?oberstes Karbon bis unteres Perm)

As part of a review of the Branchiosauridae some recently discovered specimens from the Rotliegend of the Saar-Nahe-Basin and rediscovered material from the Rotliegend of northern Saxony are

A newly discovered skull of the temnospondyl amphibian Dendrerpeton acadianum Owen

A virtually complete three-dimensional skull of a subadult of the temnospondyl amphibian Dendrerpeton acadianum provides new information on the structure of the palate and lower jaw. The left stapes

The cranial morphology of Greererpeton burkemorani Romer (Amphibia: Temnospondyli)

These systematic conclusions endorse the recent suggestions that neither the Lepospondyli nor the Labyrinthodontia are natural groups, and both terms should be abandoned.

The postcranial skeletal anatomy of the carboniferous tetrapod Greererpeton burkemorani Romer, 1969

A cladistic analysis indicates that Greererpeton burkemorani shares a more recent common ancestor with the anthracosaur Proterogyrinus scheelei than it does with either Crassigyrinus scoticus or Ichthyostega sp.

A new genus and species of trematopid amphibian from the Late Pennsylvanian of north-central New Mexico

ABSTRACT A new genus and species of trematopid amphibian, Anconastes vesperus, is based on partial skeletons from the Cutler Formation of El Cobre Canyon, north-central New Mexico. Lithostratigraphic