Middle Permian cephalopods of the Volga-Ural Region

Барсков, И. С.; Леонова, Т. Б.; Shilovsky, O. P.

doi:10.1134/s0031030114130012

Cited by 19 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Evidence for an age in the Roadian is stronger, demarcated by presence of ammonites such as Sverdrupites harkeri and S. amundseni (Lozovsky et al, 2009). These ammonites, and associated conodonts Kamagnathus khalimbadzhai and K. volgensis, correlate globally to the Roadian (Barskov et al, 2014;Leonova, 2007;Leonova and Shilovsky, 2007). The upper boundary of the Roadian is 268.8 Ma ± 0.5 Myr, so a minimum age is 268.3 Ma.…”

Section: Age Justificationmentioning

confidence: 88%

Fossil Calibrations for the Arthropod Tree of Life

Wolfe

Daley

Legg³

et al. 2016

Preprint

View full text Add to dashboard Cite

Fossil age data and molecular sequences are increasingly combined to establish a timescale for the Tree of Life. Arthropods, as the most species-rich and morphologically disparate animal phylum, have received substantial attention, particularly with regard to questions such as the timing of habitat shifts (e.g., terrestrialisation), genome evolution (e.g., gene family duplication and functional evolution), origins of novel characters and behaviours (e.g., wings and flight, venom, silk), biogeography, rate of diversification (e.g., Cambrian explosion, insect coevolution with angiosperms, evolution of crab body plans), and the evolution of arthropod microbiomes. We present herein a series of rigorously vetted calibration fossils for arthropod evolutionary history, taking into account recently published guidelines for best practice in fossil calibration. These are restricted to Palaeozoic and Mesozoic fossils, no deeper than ordinal taxonomic level, nonetheless resulting in 79 fossil calibrations for 101 clades. This work is especially timely owing to the rapid growth of molecular sequence data and the fact that many included fossils have been described within the last five years. This contribution provides a resource for systematists and other biologists interested in deep-time questions in arthropod evolution.

show abstract

Section: Age Justificationmentioning

confidence: 88%

Fossil Calibrations for the Arthropod Tree of Life

Wolfe

Daley

Legg³

et al. 2016

Preprint

View full text Add to dashboard Cite

show abstract

“…A detailed discussion of this genus is available in Barskov et al . (2014). Liroceras differs as follows from other genera of the Liroceratidae: Paranautilus has a depressed whorl profile (which is rather depressed whorl profile in Liroceras ), Peripetoceras shows a more quadrate whorl profile with subangular umbilical shoulders and Coelogasteroceras differs from Liroceras by the presence of a ventral groove.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

A Changhsingian (late Permian) nautiloid assemblage from Gujiao, South China

Miao

Dai

Korn

et al. 2019

Papers in Palaeontology

View full text Add to dashboard Cite

A c. 0.30 m thick cherty limestone bed in the Dalong Formation at Gujiao (Guizhou) has yielded a highly diverse Changhsingian nautiloid assemblage. Its age is late Changhsingian, indicated by the co‐occurring ammonoid Pseudotirolites sp. This assemblage is composed of nine species and five taxa in open nomenclature in nine genera, including one new genus and three new species: Neotainoceras zhaoi sp. nov., Nodopleuroceras gujiaoense sp. nov. and Gujiaonautilus longliensis gen. et sp. nov. Sholakoceras is for the first time recorded in South China. Compared with literature data from 52 sites in various regions worldwide, the material described here presents the most diverse Changhsingian nautiloid assemblage. Among the genera of the Gujiao assemblage, Pleuronautilus, Tainoceras and Liroceras are cosmopolitan, while the others are more endemic or genera known so far only from South China.

show abstract

“…7). The ammonoid assemblage dates the reef mounds as Roadian (Middle Permian) (Leonova, 2006(Leonova, , 2010Leonova and Shilovsky, 2007;Leonova et al, 2002Leonova et al, , 2005Barskov et al, 2014). The next, thoroughly sampled locality in the Kre meshki section no.…”

Section: Introductionmentioning

confidence: 99%

Upper Kazanian (Middle Permian) gastropods of the Volga–Urals Region

Мазаев

2015

Paleontol. J.

View full text Add to dashboard Cite

Middle Permian cephalopods of the Volga-Ural Region

Cited by 19 publications

References 6 publications

Fossil Calibrations for the Arthropod Tree of Life

Fossil Calibrations for the Arthropod Tree of Life

A Changhsingian (late Permian) nautiloid assemblage from Gujiao, South China

Upper Kazanian (Middle Permian) gastropods of the Volga–Urals Region

Contact Info

Product

Resources

About