Fossil amphibian offers insights into the interplay between monsoons and amphibian evolution in paleoequatorial Late Triassic systems

The severe greenhouse climate and seasonality of the early to mid-Late Triassic are thought to have limited terrestrial diversity at lower latitudes, but direct adaptations to these harsh conditions remain limited in vertebrates at the paleoequator. Here, we present Ninumbeehan dookoodukah gen. et sp. nov., an early amphibian with specialized adaptations for seasonal estivation from the upper Jelm Formation of the Late Triassic of Wyoming, USA. Ninumbeehan are found in an association of vertebrate estivation burrows across a locally dense horizon, offering insights into the evolution and ecology of vertebrates amid the challenging conditions of low latitude Late Triassic ecosystems. The estivation chambers were constructed within point bar deposits of an ephemeral river system, recording the cyclical signature of Triassic megamonsoons and documenting a vertebrate response to annual climate extremes across tens to hundreds of seasons. Phylogenetic analysis recovers Ninumbeehan within a g..., , , # Data from: Fossil amphibian offers insights into the interplay between monsoons and amphibian evolution in paleoequatorial Late Triassic systems

[https://doi.org/10.5061/dryad.8931zcs11](https://doi.org/10.5061/dryad.8931zcs11)

## Description of the data and file structure

TNT and MrBayes scripts for the phylogenetic analysis in the associated article, \"Fossil amphibian offers insights into the interplay between monsoons and amphibian evolution in paleoequatorial Late Triassic systems\"

* So_etal_2024_FileS2TNTScript.tnt
* So_etal_2024_FileS3BayesScript.nex

## Access information

Other publicly accessible locations of the data: [http://morphobank.org/permalink/?P5115](http://morphobank.org/permalink/?P5115),