Challenges in estimating species age from phylogenetic trees DOI Creative Commons
Carlos Calderón del Cid, Torsten Hauffe, Juan D. Carrillo

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 19, 2023

Abstract Aim Species age, the elapsed time since origination, can give an insight into how species longevity might influence eco-evolutionary dynamics and has been hypothesized to extinction risk. Traditionally, ages have measured in fossil record. However, recently, numerous studies attempted estimate of extant from branch lengths time-calibrated phylogenies. This approach poses problems because phylogenetic trees contain direct information about identity only at tips not along branches. Here, we show that incomplete taxon sampling, extinction, different assumptions speciation modes significantly alter relationship between true age lengths, leading high error rates. We found these biases lead erroneous interpretations patterns derived comparison other traits, such as Innovation For bifurcating speciation, which is default assumption most analyses, propose a probabilistic improve estimation ages, based on properties birth-death process. our model reduce by one order magnitude under cases percentage unsampled species. Main conclusion Our results call for caution interpreting this biased conclusions. that, bifurcate, it possible obtain better approximations combining with expectations

Language: Английский

Earliest Danian outer neritic elasmobranch assemblages reveal an environmentally controlled faunal turnover at the Cretaceous–Palaeogene boundary in the northern Tethyan Realm (Austria) DOI Creative Commons
Iris Feichtinger, Jürgen Pollerspöck, Mathias Harzhauser

et al.

Papers in Palaeontology, Journal Year: 2024, Volume and Issue: 10(1)

Published: Jan. 1, 2024

Abstract This study reports elasmobranch remains from two fossil‐rich horizons in the earliest Danian Olching Formation at Waidach, Austria. These outer neritic assemblages complement previous fine‐scale bulk‐sampling of latest Maastrichtian Waidach and document a regional faunal turnover across Cretaceous–Palaeogene (K–Pg) boundary. The show homogeneity species richness are dominated by squaliforms. fauna comprises 16 belonging to 12 genera including several new taxa ( Centrodeania rugosa gen. et sp. nov., annae Incognitorapax fernsebneri Scyliorhinus alaformis nov.). Comparison with revealed marked K–Pg boundary associated an increase shift abundance Squaliformes Carcharhiniformes. is environmental changes deep marine, dysoxic setting more oxygenated, shallower environment Danian. was driven environmentally induced geographic ranges. High diversity suggests that habitability corresponding palaeoenvironment preserved or recovered immediately after event. other highlights strong control local palaeoenvironmental settings over timing magnitude turnover. Our emphasizes importance successive sampling disentangle general patterns during event better assess consequences this extinction diversity.

Language: Английский

Citations

3
Late Cretaceous ammonoids show that drivers of diversification are regionally heterogeneous DOI Creative Commons
Joseph T. Flannery‐Sutherland,

Cameron D. Crossan,

Corinne Myers

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 27, 2024

Palaeontologists have long sought to explain the diversification of individual clades whole biotas at global scales. Advances in our understanding spatial distribution fossil record through geological time, however, has demonstrated that trends biodiversity were a mosaic regionally heterogeneous processes. Drivers must presumably also displayed regional variation produce disparities observed past taxonomic richness. Here, we analyse ammonoids, pelagic shelled cephalopods, Late Cretaceous, characterised by some palaeontologists as an interval biotic decline prior their total extinction Cretaceous-Paleogene boundary. We subdivide this eliminate impacts sampling biases and infer origination rates corrected for temporal using Bayesian methods. then model these abiotic drivers commonly inferred influence diversification. Ammonoid dynamics responses common set diversity heterogeneous, do not support ecological decline, demonstrate signal is influenced effort. These results call into question feasibility seeking scales record.

Language: Английский

Citations

3
The rise and fall of notoungulates: How Andean uplift, available land area, competition, and depredation driven its diversification dynamics DOI
Andrés Solórzano, Mónica Núñez‐Flores, Enrique Rodríguez‐Serrano

et al.

Gondwana Research, Journal Year: 2024, Volume and Issue: 135, P. 116 - 132

Published: Aug. 13, 2024

Language: Английский

Citations

2
Insights into the nuclear and mitochondrial genome of the Lemon shark Negaprion brevirostris using low-coverage sequencing: Genome size, repetitive elements, mitochondrial genome, and phylogenetic placement DOI
J. Antonio Baeza, Natalie C. Stephens, Alyssa Baker

et al.

Gene, Journal Year: 2023, Volume and Issue: 894, P. 147939 - 147939

Published: Oct. 29, 2023

Language: Английский

Citations

3
The Priabonian fish from Leghia (Transylvanian Basin, Romania) DOI
Nicolae Trif, Vlad Codrea, George Pleş

et al.

Historical Biology, Journal Year: 2023, Volume and Issue: 36(11), P. 2295 - 2308

Published: Sept. 11, 2023

ABSTRACTA fish fauna originating from a limestone level of the Palaeogene sedimentary succession exposed on northwestern side Transylvanian Basin (Gilău area), belonging to Viștea Limestone Formation, was discovered. On this occasion, we studied lower Priabonian assemblage Leghia-Tabără area in Cluj County. Romania is stage for which there are few data concerning fossil fish. Herein, it documented occurrence two orders elasmobranchs (Lamniformes and Carcharhiniformes), one order batoids (Myliobatiformes), three other actinopterygians (Istiophoriformes, Perciformes Tetraodontiformes). Striatolamia tchelkarnurensis, species formerly described solely Turgai Strait, firstly reported outside region its original description. Furthermore, noteworthy first record Physogaleus alabamensis Europe. This Leghia completes regional continental distributions, resulting more accurate understanding palaeogeography paleoenvironments.KEYWORDS: Late EocenepaleoichtyologyElasmobranchiiActinopterygiiRomania AcknowledgmentsWe like thank Dr Oleksandr Kovalchuk (National Academy Sciences Ukraine) anonymous reviewer work carried out correction our manuscript suggestions made improve it. We warmly Mr Adrian Oltean his donation vertebrate fossils quarry Babeș-Bolyai University. His inquisitive spirit decisive recovering fossils, otherwise would be lost. The authors very grateful June Ebersole, Jason Seitz David Ward discussions had about some specimens herein published.Disclosure statementNo potential conflict interest by author(s).Additional informationFundingFor V.A.C. M.B., supported grant Romanian Ministry Research, Innovation Digitization, CNCS-UEFISCDI, project number PN-III-P4-PCE-2021-0351, within PNCDI III.

Language: Английский

Citations

1
Chondrichthyan fishes from the Middle Eocene Osinovaya Formation of Rostov Region, Russia DOI
Evgeny Popov, Vladimir A. Lopyrev,

Andrei V. Panteleev

et al.

Historical Biology, Journal Year: 2024, Volume and Issue: 37(1), P. 126 - 152

Published: Jan. 11, 2024

A new chondrichthyan assemblage comprising 27 genera is described from the Middle Eocene Osinovaya Formation of Bystraya River Basin, Morozovsk District Rostov Region, in southern part European Russia. The consists 21 and 24 species shark, 5 batoid a single genus chimaeroid fish (Edaphodon sp.). composition characterised by coexistence Otodus sokolovi, O. auriculatus, Isurolamna bajarunasi, Macrorhizodus praecursor, Jaekelotodus trigonalis Brachycarcharias lerichei indicates Lutetian age deposits (possibly middle – upper because presence sokolovi together with auriculatus). This corresponds to previous dating Formation. Lamniformes (12 taxa) Myliobatiformes (5 are dominated between elasmobranchs, characterising inner neritic warm-water environments. elasmobranch belongs paleobiogeographic region shows great similarity previously known coeval assemblages Western Europe, as well Uzbek adjacent Crimean-Caucasian region. Scarce data on fishes show that only Edaphodon rarely present shallow-water environments

Language: Английский

Citations

0
Aligning paleobiological research with conservation priorities using elasmobranchs as a model DOI Creative Commons
Erin Dillon, Catalina Pimiento

Paleobiology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 20

Published: May 3, 2024

Abstract Humans have dramatically transformed ecosystems over the previous millennia and are potentially causing a mass extinction event comparable to others that shaped history of life. However, only fraction these impacts has been directly recorded, limiting conservation actions. Conservation paleobiology leverages geohistorical records offer long-term perspective on biodiversity change in face anthropogenic stressors. Nevertheless, field's on-the-ground contributions outcomes still developing. Here, we present an overview directions which paleobiological research could progress aid coming decades using elasmobranchs (sharks, rays, skates)—a highly threatened group with rich fossil record—as model. These guided by areas overlap between expert-led list current elasmobranch priorities available historical records. Four topics emerged for address open questions science conservation: (1) baselines, (2) ecological roles, (3) threats, (4) priorities. Increasingly datasets novel analytical frameworks exciting opportunities apply record practice. A similar approach be extended other clades. Given synthetic nature topics, encourage collaboration across timescales practitioners safeguard future our planet's rapidly disappearing species.

Language: Английский

Citations

0
The appendicular skeleton of the enigmatic shark Leptocharias smithii in comparison with other sharks of the order Carcharhiniformes (Elasmobranchii: Leptochariidae) DOI
João Paulo Capretz Batista Da Silva, Jade Medeiros, Marcus Vinícius Gonçalves Araújo

et al.

Journal of Morphology, Journal Year: 2024, Volume and Issue: 285(6)

Published: June 1, 2024

Abstract Leptocharias smithii has been poorly explored in anatomical terms. This species bears a mosaic of morphological characters and is considered to represent an intermediate condition between other carcharhiniform clades. In the present paper, anatomy appendicular skeleton thoroughly investigated compared with representatives order Carcharhiniformes. exclusive characteristics, such as visible separation pro‐ mesopterygia but it also aplesodic pectoral fin, shared carcharhiniforms placed at base phylogenetic tree same time chevron‐shaped coracoid bar, characteristic charcharhiniforms apex tree. Additionally, attempt understand evolution its carcharhiniforms, 20 paired fins girdles are discussed light two recent hypotheses. Most these were not previously support only monophyly Carcharhiniformes, mesopterygium overlapping metapterygium ventral view, less inclusive clade Hemigaleidae + (Galeocerdonidae (Carcharhinidae+Sphyrnidae)), morphology arrangement distal radials, which pointed spaced.

Language: Английский

Citations

0
Morphology and phylogenetic implications of the inclinatores dorsales for the galeomorph sharks (Chondrichthyes: Elasmobranchii) DOI Open Access
Jade Medeiros, Diego F. B. Vaz, Marcus Vinícius Gonçalves Araújo

et al.

Journal of Anatomy, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Elasmobranchs have been studied in anatomical terms for nearly 200 years, but several elements of their anatomy, such as the dorsal fin musculature, not completely addressed and still lack detailed descriptions. In this context, present study investigates variation muscles inclinatores dorsales across galeomorph sharks, shedding new light on evolution. We observed that two distinct components, being composed a profundus superficialis component. Additionally, we uncovered, through an comparative analysis, these is considerably greater than previously considered, indicating some characteristics never described before, instance presence or absence at free rear tip first fin. Moreover, our findings are different from previous interpretation context hypnosqualean hypothesis, reinforcing need reevaluation morphological characters. Lastly, discuss relation to most recent interrelationships elasmobranchs.

Language: Английский

Citations

0
Mitochondrial Genome and Phylogenetic Analysis of the Narrownose Smooth-Hound Shark Mustelus schmitti Springer, 1939 DOI Creative Commons
Walter Nisa-Castro-Neto, Paulo Guilherme Carniel Wagner, Diéssy Kipper

et al.

Animals, Journal Year: 2024, Volume and Issue: 14(23), P. 3396 - 3396

Published: Nov. 25, 2024

Southern Brazil is home to a large biodiversity of elasmobranchs from the Brazilian coast. Several genera and species small sharks Triakidae family live in this marine environment. Studies on these shark are scarce, with few genetic data little information animal population structures. The present study aimed sequence complete mitochondrial genome (mtDNA) endangered

Language: Английский

Citations

0