Woodland Hypothesis for Devonian Tetrapod Evolution

@article{Retallack2011WoodlandHF,
  title={Woodland Hypothesis for Devonian Tetrapod Evolution},
  author={Gregory J. Retallack},
  journal={The Journal of Geology},
  year={2011},
  volume={119},
  pages={235 - 258}
}
The rarity of Devonian tetrapods and the absence of tetrapods during the first 14 million years of the Mississippian (Romer’s Gap) have inspired hypotheses of fish-tetrapod evolutionary transition as an escape from difficult habitats such as deserts or stagnant waters. These hypotheses and Romer’s Gap are tested here using depth to calcic horizon in paleosols of the northern Appalachians as a proxy for precipitation and vegetation changes during the Devonian and Mississippian. All tetrapod… Expand
The terrestrial landscapes of tetrapod evolution in earliest Carboniferous seasonal wetlands of SE Scotland
Abstract The Lower Mississippian (Tournaisian) Ballagan Formation in SE Scotland yields tetrapod fossils that provide fresh insights into the critical period when these animals first moved onto land.Expand
A Middle Devonian vernal pool ecosystem provides a snapshot of the earliest forests
The dichotomy of the earliest ecosystems into deltaic and floodplain forests was a long-standing view in paleobotany. The morphological traits such as nonbranching rootlets, bifurcating rhizomes, andExpand
Palaeoenvironments of the Eifelian dolomites with earliest tetrapod trackways (Holy Cross Mountains, Poland)
Abstract The Eifelian dolomites in the Zachelmie Quarry (Holy Cross Mountains, Poland) contain trackways and tracks of tetrapods 390–391 Ma old, and thus the oldest known so far. The environments ofExpand
A key environmental driver of osteichthyan evolution and the fish-tetrapod transition?
TLDR
It is found that tidal ranges over 4 m were present around areas of evolutionary significance for the origin of osteichthyans and the fish-tetrapod transition, highlighting the possible importance of tidal dynamics as a driver for these evolutionary processes. Expand
A complete insect from the Late Devonian period
TLDR
The first complete Late Devonian insect is reported, which was probably a terrestrial species and demonstrates further a first Devonian phase of diversification for the Hexapoda, as in vertebrates, and suggests that the Pterygota diversified before and during Romer’s gap. Expand
Non-marine palaeoenvironment associated to the earliest tetrapod tracks
TLDR
A new palaeoenvironmental interpretation of the track-bearing interval from Zachełmie is presented, showing that it represents a succession of ephemeral lakes with a restricted and non-marine biota, rather than a marginal marine environment as originally thought. Expand
Ichnology and depositional environment of the Middle Devonian Valentia Island tetrapod trackways, south-west Ireland
Abstract Nine tetrapod trackways are described from the Middle Devonian continental Valentia Slate Formation on the north-eastern coast of Valentia Island in County Kerry, Ireland. The trackwaysExpand
Mudskippers in the Mekong Delta might tell us something about vertebrate transition to land?
Rise of vertebrates from water to land, which seems to be occurred in the mid to late Devonian Period (about 390 to 360 million years ago), shows one of the most crucial events throughout theExpand
Land Invasion by the Mudskipper, Periophthalmodon septemradiatus, in Fresh and Saline Waters of the Mekong River
TLDR
The ecology of an amphibious fish Periophthalmodon septemradiatus, which is in the process of niche expansion into terrestrial habitats from estuarine to freshwater environments along the Mekong River, Vietnam, suggests reproduction in both brackish and freshwater environments. Expand
Paleosol-Based Inference of Niches for Oligocene and Early Miocene Fossils from the John Day Formation of Oregon
ABSTRACT Over the past decade, we recorded exact locations of in situ fossils and measured calcareous nodules in paleosols of the Oligocene and lower Miocene (Whitneyan–Arikareean) John Day FormationExpand
...
1
2
3
...

References

SHOWING 1-10 OF 145 REFERENCES
Late Devonian tetrapod habitats indicated by palaeosols in Pennsylvania
Abstract: Late Devonian (Famennian) tetrapods from the Duncannon Member of the Catskill Formation, near Hyner (Pennsylvania, USA) have been found within palaeosols that offer a new line of evidenceExpand
The biostratigraphical and palaeogeographical framework of the earliest diversification of tetrapods (Late Devonian)
Abstract The earliest diversification of tetrapods is dated as Late Devonian based on 10 localities worldwide that have yielded bone remains. At least 18 different species are known from theseExpand
Devonian climate change, breathing, and the origin of the tetrapod stem group.
  • J. Clack
  • Biology, Medicine
  • Integrative and comparative biology
  • 2007
TLDR
The diversification of the tetrapod stem group occurred during the late Middle through the Late Devonian, that is from the Givetian to Famennian stages about 385-365 million years ago, and plant diversification was at its most rapid, changing the character of the landscape and contributing, via soils, soluble nutrients, and decaying plant matter, to anoxia in all water systems. Expand
The emergence of early tetrapods
Abstract Study of Devonian tetrapods and their relatives spanning the so-called ‘fish–tetrapod’ transition has expanded almost exponentially in the last 15 years or so. This evolutionary event is nowExpand
The Greatest Step in Vertebrate History: A Paleobiological Review of the Fish‐Tetrapod Transition*
TLDR
This review summarizes major advances made and reevaluates alternative interpretations of important parts of the evidence of the fish‐tetrapod transition, and discusses each of these steps with respect to inferred functional utility of acquired character sets. Expand
EARLY TETRAPOD JAWS FROM THE LATE DEVONIAN OF PENNSYLVANIA, USA
TLDR
A new Late Devonian tetrapod, Densignathus rowei, is described, based on a well-preserved lower jaw, characterized by dramatic widening of the jaw anterior of the adductor fossa, a pronounced twist in the orientation of ventral margin of the jaws, and weakly-developed radiating ornament on the lateral surface of the infradentaries. Expand
FURTHER COMMENTS ON THE ORIGIN OF THE TETRAPODS
TLDR
Ewer (1955) points out that this thesis fails to answer the question of why the amphibians should have left the water at a time when aquatic habitats were expanding. Expand
Giant cladoxylopsid trees resolve the enigma of the Earth’s earliest forest stumps at Gilboa
The evolution of trees of modern size growing together in forests fundamentally changed terrestrial ecosystems. The oldest trees are often thought to be of latest Devonian age (about 380–360 Myr old)Expand
Ecology and evolution of Devonian trees in New York, USA
Abstract The first trees in New York were Middle Devonian (earliest Givetian) cladoxyls (?Duisbergia and Wattieza), with shallow-rooted manoxylic trunks. Cladoxyl trees in New York thus postdateExpand
ENVIRONMENTAL AND ECOLOGICAL VARIABILITY OF MIDDLE DEVONIAN (GIVETIAN) FORESTS IN APPALACHIAN BASIN PALEOSOLS, NEW YORK, UNITED STATES
Abstract The inception of terrestrial woody plant ecosystems on the Earth is thought to have caused decreases in atmospheric carbon dioxide and water vapor concentrations in the Middle Devonian.Expand
...
1
2
3
4
5
...