A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting in temnospondyls DOI Creative Commons
Aaron M. Kufner,

Max E. Deckman,

Hannah R. Miller

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 28, 2024

Abstract Metoposaurid-dominated bonebeds are relatively commonplace in Upper Triassic continental deposits with at least ten monodominant, densely populated globally. The biostratinomy of several classic localities India, North America, and Poland have been explored detail, however, variability methods resultant conclusions point to the need for a more nuanced approach understanding both taphonomic ecological origins metoposaurid-dominated bonebeds. Here we present first monodominant metoposaurid mass mortality assemblage from Late Popo Agie Formation stratigraphically lowest known record fauna Fm including occurrence Buettnererpeton bakeri Wyoming. We employ previously used binning based on perceived hydrodynamic equivalence (“Voorhies groups”) assess pre-burial skeletal sorting. suggest simple counting normalization method that avoids inherent bias introduced by interpretation elements taxa lack actualistic experimental data. In contrast other American bonebeds, sedimentology sorting analyses Nobby Knob quarry support an autochthonous origin this fluvio-lacustrine system little Despite differences underlying assumptions regarding dispersal potential specific elements, tend follow similar trends regardless framework different assemblages.

Language: Английский

Fossil amphibian offers insights into the interplay between monsoons and amphibian evolution in palaeoequatorial Late Triassic systems DOI Creative Commons
Calvin So, Aaron M. Kufner, Jason D. Pardo

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2033)

Published: Oct. 1, 2024

The severe greenhouse climate and seasonality of the early to mid-Late Triassic are thought have limited terrestrial diversity at lower latitudes, but direct adaptations these harsh conditions remain in vertebrates palaeoequator. Here, we present Ninumbeehan dookoodukah gen. et sp. nov., an amphibian with specialized for seasonal estivation from upper Jelm Formation Late Wyoming, USA. found association vertebrate burrows across a locally dense horizon, offering insights into evolution ecology amid challenging low-latitude ecosystems. Estivation chambers were excavated within point bar deposits ephemeral river system, recording cyclical signature megamonsoons documenting response annual extremes tens hundreds seasons. Phylogenetic analysis recovers group temnospondyls characterized by fossorial adaptation, underscoring widespread adoption burrowing total Lissamphibia. hints pivotal role dynamics played shaping evolution.

Language: Английский

Citations

4
Forever young - dvinosaur DOI

Anton Ulyakhin

Priroda, Journal Year: 2025, Volume and Issue: 3(1315), P. 34 - 34

Published: Jan. 1, 2025

Dvinosaurs are amazing temnospondyl amphibians that lived in the territory of modern European Russia Late Permian. Their neotenic lifestyle was similar to axolotls, due which dvinosaurs much longer than other temnospondyls and didn’t change unusual biology for million years their evolution.

Language: Английский

Citations

0
A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting DOI Creative Commons
Aaron M. Kufner,

Max E. Deckman,

Hannah R. Miller

et al.

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(4), P. e0317325 - e0317325

Published: April 2, 2025

Metoposaurid-dominated bonebeds are relatively commonplace in Upper Triassic continental deposits with at least ten monodominant, densely-packed globally. The biostratinomy of several classic localities India, North America, and Poland have been explored detail; however, variability methods resultant conclusions point to the need for a more rigorous approach understanding both taphonomic ecological origins metoposaurid-dominated bonebeds. Here we present first monodominant metoposaurid mass mortality assemblage from Late Popo Agie Formation stratigraphically lowest known record fauna Fm including occurrence Buettnererpeton bakeri Wyoming. We employ previously tested binning based on perceived hydrodynamic equivalence (“Voorhies groups”) assess pre-burial skeletal sorting. suggest simple counting normalization method that avoids inherent bias introduced by interpretation elements taxa lack actualistic experimental data. In contrast other American bonebeds, sedimentology sorting analyses Nobby Knob quarry support an autochthonous origin this fluvio-lacustrine system little Despite differences underlying assumptions regarding dispersal potential specific elements, tend follow similar trends regardless framework used different assemblages.

Language: Английский

Citations

0
A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting in temnospondyls DOI Creative Commons
Aaron M. Kufner,

Max E. Deckman,

Hannah R. Miller

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 28, 2024

Abstract Metoposaurid-dominated bonebeds are relatively commonplace in Upper Triassic continental deposits with at least ten monodominant, densely populated globally. The biostratinomy of several classic localities India, North America, and Poland have been explored detail, however, variability methods resultant conclusions point to the need for a more nuanced approach understanding both taphonomic ecological origins metoposaurid-dominated bonebeds. Here we present first monodominant metoposaurid mass mortality assemblage from Late Popo Agie Formation stratigraphically lowest known record fauna Fm including occurrence Buettnererpeton bakeri Wyoming. We employ previously used binning based on perceived hydrodynamic equivalence (“Voorhies groups”) assess pre-burial skeletal sorting. suggest simple counting normalization method that avoids inherent bias introduced by interpretation elements taxa lack actualistic experimental data. In contrast other American bonebeds, sedimentology sorting analyses Nobby Knob quarry support an autochthonous origin this fluvio-lacustrine system little Despite differences underlying assumptions regarding dispersal potential specific elements, tend follow similar trends regardless framework different assemblages.

Language: Английский

Citations

0