The oldest Gondwanan record of the extinct durophagous hybodontiform chondrichthyan, Strophodus from the Bajocian of Morocco DOI Creative Commons
Sebastian Stumpf, Christoph Kettler,

René Kindlimann

et al.

Swiss Journal of Palaeontology, Journal Year: 2023, Volume and Issue: 142(1)

Published: April 25, 2023

Abstract Strophodus is a speciose and geographically widespread taxon of large durophagous hybodontiform chondrichthyan, with stratigraphic range extending from Middle Triassic to the Early Cretaceous. Here, we describe new species , S . atlasensis sp. nov., based on an incomplete articulated dentition recovered marine Bajocian deposits eastern High Atlas Mountains in Morocco. The diagnosed by unique combination dental characters that includes, among others, presence triangular first lateral teeth, mesio-distally wide bulbous second teeth without occlusal crest or dome uniquely shaped posterior are shorter than being labio-lingually long, as well small whose roots protrude below crowns meet each other efficient interlocking manner. holotype only specimen nov. represents hitherto oldest known record Gondwana genus Bajocian, thus adding valuable novel information our understanding evolutionary history extinct chondrichthyans.

Language: Английский

Geodiversification: The Evolution of Geodiversity Through Time DOI Creative Commons
Borut Stojilković, Murray Gray

Geoheritage, Journal Year: 2024, Volume and Issue: 16(3)

Published: Sept. 1, 2024

Language: Английский

Citations

3
Early Mesozoic burst of morphological disparity in the slow-evolving coelacanth fish lineage DOI Creative Commons

Christophe Ferrante,

Lionel Cavin

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: July 13, 2023

Abstract Since the split of coelacanth lineage from other osteichthyans 420 million years ago, morphological disparity this clade has remained remarkably stable. Only few outliers with peculiar body shape stood out over evolutionary history, but they were phylogenetically and stratigraphically independent each other. Here, we report discovery a new ancient latimeriid coelacanths representing small flock species present in Western Tethys between 242 241 ago. Among four species, two show highly derived anatomy. A genus shows reversal to plesiomorphic conditions its skull caudal fin organisation. The sister Foreyia have anatomical modules that moved general Bauplau either same direction or opposite affect proportions body, opercle fins. Comparisons extant genetic models changes regulatory network Hedgehog signal gene family may account for most altered This unexpected, short confined represents only known example burst long history at recovery period after Permian–Triassic Mass Extinction.

Language: Английский

Citations

8
Phanerozoic oceanic and climatic perturbations in the context of Tethyan evolution DOI
Li Tian, Haijun Song, Yuchu Liu

et al.

Science China Earth Sciences, Journal Year: 2023, Volume and Issue: 66(12), P. 2791 - 2806

Published: Nov. 22, 2023

Language: Английский

Citations

7
A Middle Triassic Cassian‐type fauna (Pelsa‐Vazzoler Lagerstätte) and the adaptive radiation of the Modern evolutionary fauna DOI Creative Commons
Stefano Dominici, Silvia Danise, Andrea Tintori

et al.

Papers in Palaeontology, Journal Year: 2024, Volume and Issue: 10(4)

Published: July 1, 2024

Abstract We describe a high‐diversity silicified assemblage of marine molluscs (Pelsa‐Vazzoler Lagerstätte) from the upper Ladinian Agordo Dolomites (northeastern Italy). New data on Triassic rebound, after end‐Permian mass extinction, constrain it to an interval relatively stable climatic conditions. This Lagerstätte, in Sciliar Formation, yields structure comparable famous lower Carnian San Cassiano Lagerstätte and suggests that radiation benthic may have occurred as early late Middle Triassic. classified more than 4800 Cassian‐type molluscs, measuring abundance distributions 109 species, including one new family (Rhaetidiidae), three genera ( Pelsia , Gaetania Agordozyga ) 21 species: Grammatodon egortinus Modiolus friesenbichlerae Myoconcha busattae Schizogonium letiziae Predazzella ? monarii Eucycloscala nitida Tricolnaticopsis elongatus Cortinella stricta Triadoskenea alpicornu Trachynerita tenuicostata Coelostylina civettae coronata caprina Euthystylus dincae Zygopleura elongata Diatrypesis agordina Cryptaulax pelsae Pseudoscalites karapunari Promathildia gracile Camponaxis ladinica Striactaeonina ingens . In this fauna, associated with tropical carbonate platforms, epifaunal filter‐feeding bivalves adopted antipredatory features gastropods conquered ecospace, parasitism microcarnivory sponges scleractinian corals. Small size was advantage ecosystem small, isolated patch reefs. is how, where when caenogastropod heterobranch snails (groups today dominate global diversity) began their rise benthos. The origins some evolutionary innovations are key our understanding time place Mesozoic Marine Revolution, therefore pushed back

Language: Английский

Citations

2
First occurrence of hybodontid teeth in the Luoping Biota (Middle Triassic, Anisian) and recovery of the marine ecosystem after the end-Permian mass extinction DOI Creative Commons
Wen Wen, Qiyue Zhang, Jürgen Kriwet

et al.

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2023, Volume and Issue: 617, P. 111471 - 111471

Published: Feb. 27, 2023

Hybodont sharks were some of the most successful chondrichthyan lineages all time, first occurring in Devonian and becoming extinct Late Cretaceous. The end-Permian mass extinction had a limited effect on hybodont sharks, but there are fewer records hybodonts Triassic than Jurassic Cretaceous China. Middle Luoping Biota (Pelsonian, Anisian) is famous as an example complete re-establishment shallow marine food web after extinction. Actinopterygian fishes abundant diverse this assemblage, with 31 taxa described, including Halecomorphi Ginglymodi, few fishes. Here we describe three hybodontid based teeth for one them ascribed to new taxon Lonchidiidae, Luopingselache striata gen. et sp. nov., other two Acrodus. dentition preserved situ shows pronounced monognathic heterodonty. This represents detailed account information tooth replacement rate from Mesozoic We show that very rapid, namely 2.6 days/row average, which might be adaptation replace broken insure maintenance adequate dentition. Further, newly discovered crushing-type durophagous Acrodus A B not only made more complex, also emphasized recovery ecosystem

Language: Английский

Citations

5
High-resolution Early Triassic ammonoid biostratigraphy of South Tibet, China and implications for global correlations DOI Creative Commons
Xu Dai, Arnaud Brayard, David Ware

et al.

Earth-Science Reviews, Journal Year: 2023, Volume and Issue: 239, P. 104384 - 104384

Published: March 15, 2023

Language: Английский

Citations

4
Actinopterygian and chondrichthyan ichthyoliths reveal enhanced cosmopolitanism in Late Triassic marine ecosystems DOI Creative Commons
Lydia S. Tackett,

Deron Zierer,

Annaka C. Clement

et al.

Historical Biology, Journal Year: 2022, Volume and Issue: 35(11), P. 2022 - 2035

Published: Nov. 15, 2022

The Late Triassic was a time of major evolutionary transition for marine vertebrates, with the emergence important new clades and expansion durophagy. diversity record shallow vertebrates has been limited by poor preservation, palaeogeographic ranges common is poorly constrained. Isolated ichthyoliths are an resource documenting taxonomic ecological in environments have relatively high preservation potential. Here, we report first Upper elasmobranchs, neopterygians chondrosteans from Nevada, contribute 14 generic occurrences. represented this survey include teeth specialised durophages piscivores, tentative reconstruction ecosystem trophic niches based on dietary interpretations known shelly macrofossils locality. ichthyolith assemblage exhibited greater similarity to low-latitude Europe than high-latitude Canada localities, results study suggest that several taxa previously considered be endemic may cosmopolitan. present highlights need additional research early Mesozoic order establish patterns, paleobiogeographic ranges, timing adaptive radiations among key groups Period suboptimal conditions.

Language: Английский

Citations

7
Triassic climate and the rise of the dinosaur empire in South America DOI
Leonardo Corecco, Matthew J. Kohn, César Leandro Schultz

et al.

Journal of South American Earth Sciences, Journal Year: 2024, Volume and Issue: 142, P. 104977 - 104977

Published: June 5, 2024

Language: Английский

Citations

1
Impact of environmental barriers on temnospondyl biogeography and dispersal during the Middle–Late Triassic DOI Creative Commons
Raphael Moreno, Emma M. Dunne, Eudald Mujal

et al.

Palaeontology, Journal Year: 2024, Volume and Issue: 67(5)

Published: Sept. 1, 2024

Abstract Temnospondyls had a remarkable worldwide distribution throughout the Triassic at time of periodic arid climates, and were stable component terrestrial ecosystems. Given postulated ancestral relationship between temnospondyls modern lissamphibians it is pertinent to recognize that group may have exhibited some degree ecological resilience adaptability. Despite this higher level plasticity, might still been susceptible environmental climate changes. Although fossil sites are distributed sporadically, we try circumvent present geographical geological biases by combining actual occurrences with conditions derived from general circulation models. Here, employ species modelling examine palaeogeographic palaeoclimatic European during transition Middle Late Triassic. The model shows different suitable areas for temnospondyl habitats give new potential insights on biogeographic patterns dispersal potential. We suggest Central Basin functioned as focal point diversification spread. Moreover, paper provides first application aids in understanding their climatic niche occupation evolution.

Language: Английский

Citations

1
Sequence comparison of the mitochondrial genomes of five caridean shrimps of the infraorder Caridea: phylogenetic implications and divergence time estimation DOI Creative Commons
Yuman Sun, Wanting Liu, Jian Chen

et al.

BMC Genomics, Journal Year: 2024, Volume and Issue: 25(1)

Published: Oct. 16, 2024

The Caridea, affiliated with Malacostraca, Decapoda, and Pleocyemata, constitute one of the most significant shrimp groups. They are widely distributed across diverse aquatic habitats worldwide, enriching their evolutionary history. In recent years, considerable attention has been focused on classification systematic evolution yet controversies still exist regarding phylogenetic relationships among families.

Language: Английский

Citations

1