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Limuloid trackways from Permian-Triassic continental successions of North China

Published on Nov 1, 2018in Palaeogeography, Palaeoclimatology, Palaeoecology 2.62
· DOI :10.1016/j.palaeo.2018.07.022
Wenchao Shu1
Estimated H-index: 1
(China University of Geosciences),
Jinnan Tong26
Estimated H-index: 26
(China University of Geosciences)
+ 4 AuthorsWenwei Guo1
Estimated H-index: 1
(China University of Geosciences)
Abstract Forty-four well-preserved specimens of Kouphichnium , a typical limuloid (horseshoe crab) trackway, are reported and systematically studied for the first time from continental Upper Permian to Lower Triassic successions in North China. A new ichnotaxonomic system of Kouphichnium is proposed according to the ichnotaxobase of limuloid trackways, including simple foot imprints (T), pusher imprints (P), median impressions (M) and genal spine impressions (GS). In total, one ichnogenus and six ichnospecies are recognized, one of which is new: Kouphichnium liulinensis sp. nov. Ichnogenus Paramphibius is regarded as a synonym of Kouphichnium and the diagnoses of ichnogenus Kouphichnium and its two early ichnospecies, i.e. type ichnospecies Kouphichnium lithographicum Oppel, and Kouphichnium didactylum Willard, are revised. A morphological-palaeoethological pattern is proposed in reference to these ichnospecies from the continental Upper Permian to Lower Triassic successions in North China. These six ichnospecies are assigned to six types in the new ichnotaxonomic system and the locomotion rates of each type can be ranked by the possible speed index λ. The size of trackmaker is estimated from the external width of the trackway, and it shows a drastic decrease from the Late Permian to Early Triassic, followed by a gradual increase in the Early Triassic. This size variation of trackmakers (limuloids) during the Permian-Triassic transition, especially the drastic drop, probably reflects the intensive environmental stress during the biotic crisis. In addition, the analysis of the sizes of pusher imprints (P) from certain well-preserved trackways suggests a potential sexual dimorphism of limuloids.
  • References (69)
  • Citations (1)
Published on Mar 1, 2018in Journal of Iberian Geology 0.93
Eudald Mujal6
Estimated H-index: 6
(Autonomous University of Barcelona),
Zain Belaústegui8
Estimated H-index: 8
(University of Barcelona)
+ 3 AuthorsJosé Ángel López2
Estimated H-index: 2
Purpose Xiphosurids (horseshoe crabs) are aquatic chelicerate arthropods commonly related to marine environments. Although today only four marine species exist, in the geological record they were much more diverse (especially during Carboniferous and Triassic periods), and even inhabited non-marine settings. Here we analyze an exceptional xiphosurid trace-fossil site preserved in the lowermost Buntsandstein red-beds from the Early Triassic of the Catalan Pyrenees.
Published on Oct 1, 2017in Palaeogeography, Palaeoclimatology, Palaeoecology 2.62
Daoliang Chu9
Estimated H-index: 9
(China University of Geosciences),
Jinnan Tong26
Estimated H-index: 26
(China University of Geosciences)
+ 2 AuthorsYunfei Huang6
Estimated H-index: 6
(Yangtze University)
Abstract Correlation between marine and continental Permian-Triassic (P-Tr) strata is crucial for full understanding of the nature of this global extinction event, but it has proved difficult to achieve. Here, we show that two sections in South China and North China record similar mixed continental-marine biota in the post-extinction stratigraphic interval, including conchostracans, plants, insects, marine bivalves and lingulid brachiopods. In addition, the continental P-Tr mass extinction was r...
Published on Mar 1, 2017in Palaeontologische Zeitschrift 1.27
Matthias Alberti7
Estimated H-index: 7
(CAU: University of Kiel),
Franz T. Fürsich37
Estimated H-index: 37
(FAU: University of Erlangen-Nuremberg),
Dhirendra K. Pandey12
Estimated H-index: 12
(University of Rajasthan)
A 44 cm long trackway from the Kimmeridgian-Tithonian of the western Kachchh Basin represents the first evidence of the occurrence of members of the order Xiphosura in the Jurassic of India. The track consists of the imprints of the legs and the tail spine of a 36–44 cm long limulid and can be assigned to the ichnogenus Kouphichnium Nopsca, 1923. It was formed in a soft, silty to fine sandy substrate below the storm wave-base and preserved as a hyporelief at the base of a thin sandstone bed depo...
Published on Jan 1, 2017in Earth-Science Reviews 9.53
Luis A. Buatois36
Estimated H-index: 36
(U of S: University of Saskatchewan),
Max Wisshak2
Estimated H-index: 2
+ 1 AuthorsMaría Gabriela Mángano31
Estimated H-index: 31
(U of S: University of Saskatchewan)
Abstract Ichnodisparity has been recently introduced as a concept to assess the variability of morphologic plans in biogenic structures, revealing major innovations in body plan, locomotory system and/or behavioral program. Whereas ichnodiversity is measured in terms of the number of ichnotaxa (i.e. ichnogenera or ichnospecies), ichnodisparity is evaluated based on the identification of categories of architectural design. Seventy-nine categories of architectural designs (58 for bioturbation stru...
Published on Nov 1, 2016
Mike Romano1
Estimated H-index: 1
Robert Taylor1
Estimated H-index: 1
Two previously unrecorded invertebrate trackway types, Kouphichnium . isp. indet. and Kouphichnium cf. arizonae , are described from the Middle Jurassic Saltwick Formation of the Cleveland Basin, Yorkshire. The trackways are considered to have been made by limulids in an interdistributary bay environment.
Published on Aug 1, 2016in Zoological Journal of the Linnean Society 2.91
Michael J. Benton66
Estimated H-index: 66
(UoB: University of Bristol)
Pareiasaurs were important medium- to large-sized herbivores in the Middle and Late Permian, some 268–252 Ma. They are best known from abundant remains of several taxa found in South Africa and Russia, with isolated finds from other parts of the world. Six genera and species of pareiasaurs have been described from China, and yet they have not been reviewed. Of these six, Tsiyuania may be a synonym of Honania, but this taxon is not further considered here. The other four, which were named for sep...
Published on Mar 1, 2016in Sedimentary Geology 3.24
Chenyi Tu1
Estimated H-index: 1
(China University of Geosciences),
Zhong-Qiang Chen34
Estimated H-index: 34
(China University of Geosciences)
+ 2 AuthorsYuheng Fang8
Estimated H-index: 8
(China University of Geosciences)
Abstract Microbially induced sedimentary structures (MISSs) are commonly present in siliciclastic shallow marine settings following the end-Permian mass extinction, but have been rarely reported in the post-extinction terrestrial ecosystems. Here, we present six types of well-preserved MISSs from the upper Sunjiagou Formation and lower Liujiagou Formation of Induan (Early Triassic) age in the Yiyang area, Henan Province, North China. These MISSs include: polygonal sand cracks, worm-like structur...
Published on Mar 1, 2016in Palaeontology 2.63
James C. Lamsdell13
Estimated H-index: 13
(Yale University)
Xiphosurids are an archaic group of aquatic chelicerate arthropods, generally known by the colloquial misnomer of ‘horseshoe crabs’. Known from marine environments as far back as the early Ordovician, horseshoe crabs are generally considered ‘living fossils’ – descendants of a bradytelic lineage exhibiting little morphological or ecological variation throughout geological time. However, xiphosurids are known from freshwater sediments in the Palaeozoic and Mesozoic; furthermore, the contention th...
Published on Nov 1, 2015
M. Romano1
Estimated H-index: 1
M. A. Whyte1
Estimated H-index: 1
Since the ichnogenus Selenichnus , subsequently renamed Selenichnites , was first introduced in 1987, nine ichnospecies have been assigned to the ichnotaxon. The records are from all of the continents and range in age from Cambrian to Jurassic. These occurrences are reviewed and are found to include a diversity of morphological forms, some of which we believe should not be included within Selenichnites as defined in the original diagnosis. Also some of these ichnotaxa are inadequately described ...
Cited By1
Published on Oct 1, 2019in Global and Planetary Change 4.10
Wenwei Guo1
Estimated H-index: 1
(China University of Geosciences),
Jinnan Tong26
Estimated H-index: 26
(China University of Geosciences)
+ 4 AuthorsKaixuan Ji (China University of Geosciences)
Abstract Ichnological studies are exceptionally important for reconstruction of ecosystems in the aftermath of mass extinctions, but they have only rarely been undertaken from strata deposited in continental settings during the Permian–Triassic transition. This paper systematically documents seventeen ichnogenera and three ichno-types coupled with plant fossils (mainly equisetaceous stems and roots) from the fluvial–lacustrine Late Permian to Middle Triassic Shichuanhe section in North China. Th...
Published on Aug 1, 2019
Russell D. C. Bicknell4
Estimated H-index: 4
(UNE: University of New England (Australia)),
Tom Brougham2
Estimated H-index: 2
(UNE: University of New England (Australia))
+ 3 AuthorsNicolás E. Campione (UNE: University of New England (Australia))
Xiphosurida—crown group horseshoe crabs—are a group of morphologically conservative marine chelicerates (at least since the Jurassic). They represent an idealised example of evolutionary stasis. Unfortunately, body fossils of horseshoe crabs seldom preserve appendages and their associated features; thus, an important aspect of their morphology is absent in explorations of their conservative Bauplan. As such, fossil horseshoe crab appendages are rarely considered within a comparative framework: p...
Published on Feb 1, 2019in Palaeogeography, Palaeoclimatology, Palaeoecology 2.62
Mostafa Oukassou3
Estimated H-index: 3
Abdelouahed Lagnaoui6
Estimated H-index: 6
(Kazan: Kazan Federal University)
+ 5 AuthorsHassan Ibouh5
Estimated H-index: 5
(Cadi Ayyad University)
Abstract Horseshoe crabs (Chelicerata, Xiphosura) from Mesozoic deposits are extremely rare in the fossil record of the African continent. Here we report new evidence of the occurrence of xiphosurans in North Africa. These are horseshoe crab traces, including the ichnogenera Kouphichnium (repichnia) and Selenichnites (fodinichnia and/or domichnia), which have been discovered in Middle Jurassic strata of the Imilchil area (Central High Atlas, Morocco). They are preserved on upper and lower bed su...