ArticleScience advances2017
Unexpected Early Triassic marine ecosystem and the rise of the Modern evolutionary fauna.
Article in Science advances, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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27 citing papers in PubMed.
- Phased ecological assembly of Triassic marine reptile faunas following the Permian-Triassic mass extinction: ecospace dynamics in South China.Proceedings. Biological sciences · 2026Article
- A ∼0.5 Myr perturbation of carbon and mercury cycles during the Middle Triassic biotic radiation.Science advances · 2026Article
- Article
- The timing and nature of marine ecosystem recovery following the Permian-Triassic mass extinction.npj biodiversity · 2026Review
- Geochronology of the Early Triassic based on coupled Bayesian zircon eruption age and Bayesian age-depth models.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Physiology and climate change explain unusually high similarity across marine communities after end-Permian mass extinction.Science advances · 2025Article
- The ecology and geography of temnospondyl recovery after the Permian-Triassic mass extinction.Royal Society open science · 2025Article
- Article
- Article
- The Cabrières Biota (France) provides insights into Ordovician polar ecosystems.Nature ecology & evolution · 2024Article
- Special Issue: 100 years of scientific excavations at UNESCO World Heritage Site Monte San Giorgio and global research on Triassic marine Lagerstätten.Swiss journal of palaeontology · 2024Article
- The marine conservation deposits of Monte San Giorgio (Switzerland, Italy): the prototype of Triassic black shale Lagerstätten.Swiss journal of palaeontology · 2024Article
- Analysis of ancient mass extinction recoveries in marine environments: generating strategies for managing outcomes of the current mass extinction.National science review · 2024Article
- Swiss ichthyosaurs: a review.Swiss journal of palaeontology · 2024Article
- Article
- Resilience of infaunal ecosystems during the Early Triassic greenhouse Earth.Science advances · 2022Article
- Global diversity dynamics in the fossil record are regionally heterogeneous.Nature communications · 2022Article
- Article
- Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian.Scientific reports · 2021Article
- A multiscale view of the Phanerozoic fossil record reveals the three major biotic transitions.Communications biology · 2021Article
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18 authors.
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No grant is acknowledged in the PubMed record.
Abstract
In the wake of the end-Permian mass extinction, the Early Triassic (~251.9 to 247 million years ago) is portrayed as an environmentally unstable interval characterized by several biotic crises and heavily depauperate marine benthic ecosystems. We describe a new fossil assemblage-the Paris Biota-from the earliest Spathian (middle Olenekian, ~250.6 million years ago) of the Bear Lake area, southeastern Idaho, USA. This highly diversified assemblage documents a remarkably complex marine ecosystem including at least seven phyla and 20 distinct metazoan orders, along with algae. Most unexpectedly, it combines early Paleozoic and middle Mesozoic taxa previously unknown from the Triassic strata, among which are primitive Cambrian-Ordovician leptomitid sponges (a 200-million year Lazarus taxon) and gladius-bearing coleoid cephalopods, a poorly documented group before the Jurassic (~50 million years after the Early Triassic). Additionally, the crinoid and ophiuroid specimens show derived anatomical characters that were thought to have evolved much later. Unlike previous works that suggested a sluggish postcrisis recovery and a low diversity for the Early Triassic benthic organisms, the unexpected composition of this exceptional assemblage points toward an early and rapid post-Permian diversification for these clades. Overall, it illustrates a phylogenetically diverse, functionally complex, and trophically multileveled marine ecosystem, from primary producers up to top predators and potential scavengers. Hence, the Paris Biota highlights the key evolutionary position of Early Triassic fossil ecosystems in the transition from the Paleozoic to the Modern marine evolutionary fauna at the dawn of the Mesozoic era.
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