Palaeozoic evolution of animal mouthparts

Klug, Christian; Frey, L.; Pohle, Alexander; Baets, K. De; Korn, D.

doi:10.3140/bull.geosci.1648

Cited by 38 publications

(36 citation statements)

References 30 publications

(52 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The late Palaeozoic saw turnover in a number of vertebrate clades, which resulted in an abundance and diversity of durophagous predators (Sallan & Coates ; Klug et al . ). This enhanced predation from durophagous predators has been tied to the evolution of anti‐predatory strategies in crinoids (Sallan et al .…”

Section: Discussionmentioning

confidence: 97%

Phylogenetic analysis of the Archaeocidaridae and Palaeozoic Miocidaridae (Echinodermata, Echinoidea) and the origin of crown group echinoids

Thompson

Mirantsev

Petsios

et al. 2019

Papers in Palaeontology

View full text Add to dashboard Cite

The archaeocidarids comprise the most derived stem group echinoids and have long been regarded as closely related to the crown group. The fossil record of echinoids in the Palaeozoic is, however, poor, so details surrounding the initial divergence of crown group echinoids are not well constrained. In order to better understand the phylogenetic relationships of the most derived stem group and most basal crown group echinoids, a phylogenetic analysis was undertaken of the Archaeocidaridae, including the genera Nortonechinus, Devonocidaris, Lepidocidaris, Polytaxicidaris and Archaeocidaris and the Palaeozoic miocidarid cidaroids from the genus Eotiaris. We found that Archaeocidaris appears to be paraphyletic with respect to crown group echinoids. Furthermore, we mapped character evolution along our phylogeny and found that the diversification of archaeocidarids and miocidarids may be linked to large-scale macroecological changes taking place in the late Palaeozoic, including increasing predation pressure and echinoid encrustation by epibionts. We compared the stratigraphical distribution of archaeocidarid and miocidarid occurrences to our resulting phylogenies, and found that the fit of our cladograms to the stratigraphic record of archaeocidarid occurrences is worse than other echinoid groups, supporting the idea that the imbricate plated archaeocidarids have a poor fossil record. In the course of carrying out these analyses, we also felt it necessary to describe a new species of Archaeocidaris, Archaeocidaris ivanovi sp. nov. We also provide novel descriptions and interpretations for Devonocidaris primaevus, Archaeocidaris brownwoodensis, Archaeocidaris apheles and revise the synonymy of Archaeocidaris legrandensis and ?Eotiaris meurevillensis, which may be a crown group echinoid.

show abstract

Section: Discussionmentioning

confidence: 97%

Phylogenetic analysis of the Archaeocidaridae and Palaeozoic Miocidaridae (Echinodermata, Echinoidea) and the origin of crown group echinoids

Thompson

Mirantsev

Petsios

et al. 2019

Papers in Palaeontology

View full text Add to dashboard Cite

show abstract

“…In addition, it has been indicated that mouth size is also important in increasing sediment reworking because small mouths tend to be associated to selective ingestion of small volumes or organic-rich detritus 29 . Although any discussion of mouth size of the producer of Parapsammichnites would be completely speculative, we note that the Ediacaran–Cambrian transition has been regarded as a time of significant evolution in metazoan mouthparts, albeit in connection with predation rather than deposit feeding 67 .…”

Section: Discussionmentioning

confidence: 93%

Sediment disturbance by Ediacaran bulldozers and the roots of the Cambrian explosion

Buatois

Almond²,

Mángano

et al. 2018

Sci Rep

View full text Add to dashboard Cite

Trace fossils of sediment bulldozers are documented from terminal Ediacaran strata of the Nama Group in Namibia, where they occur in the Spitskop Member of the Urusis Formation (Schwarzrand Subgroup). They consist of unilobate to bilobate horizontal to subhorizontal trace fossils describing scribbles, circles and, more rarely, open spirals and meanders, and displaying an internal structure indicative of active fill. Their presence suggests that exploitation of the shallow infaunal ecospace by relatively large bilaterians was already well underway at the dawn of the Phanerozoic. Efficient burrowing suggests coelom development most likely linked to metazoan body-size increase. These trace fossils are the earliest clear representatives so far recorded of sediment bulldozing, an activity that may have had a negative impact on suspension-feeding and/or osmotroph communities, as well as on matgrounds, representing early examples of ecosystem engineering and trophic-group amensalism. The occurrence of sediment bulldozers may have promoted the establishment of gradients in horizontal and vertical distribution of organic material in connection with spatially heterogeneous environments on the sea floor at a critical time in Earth evolution.

show abstract

“…The works comprising this volume include, on one hand, those contributions of Colmenar et al (2017) and Pereira et al (2017) focused on the study of the Ordovician faunas (mainly brachiopods and trilobites) from Portugal, Spain, Czech Republic and Morroco; and secondly the contributions of Lu et al (2017), Chevrinais et al (2017) and Klug et al (2017), all of them focused on the Devonian Period including two main approaches, conodont biostratigraphy (Lu et al 2017), and palaeoecology (Chevrinais et al 2017, Klug et al 2017.…”

Section: Special Issue Contributionsmentioning

confidence: 99%

“…The most interesting conclusion of this work is that the Devonian vertebrate communities were organized in multiple trophic levels, comparable to those of recent aquatic ecosystems, showing a consistency of aquatic food web structure across geological time, and indicating that size-based feeding interactions were established early in vertebrate history. This interesting palaeoecological paper, is completed by the study of Klug et al (2017) describing a new major macroecological event during the Silurian-Devonian times, the so-called Siluro-Devonian Jaw Armament in relationship with the Palaeozoic Plankton Revolution and the Devonian Nekton Revolution. Klug et al (2017) discuss the evolutionary advancement in oral equipment, i.e.…”

Section: Special Issue Contributionsmentioning

confidence: 99%

“…This interesting palaeoecological paper, is completed by the study of Klug et al (2017) describing a new major macroecological event during the Silurian-Devonian times, the so-called Siluro-Devonian Jaw Armament in relationship with the Palaeozoic Plankton Revolution and the Devonian Nekton Revolution. Klug et al (2017) discuss the evolutionary advancement in oral equipment, i.e. the Palaeozoic evolution of mouthparts and jaws in a macroecological context, standing out that during the Siluro-Devonian important innovations in the evolution of oral structures occurred.…”

Section: Special Issue Contributionsmentioning

confidence: 99%

See 1 more Smart Citation

Life in the Palaeozoic: an overview of land and sea ecosystems

Ferrón¹,

Martínez‐Pérez²

2017

Bull. Geosci.

View full text Add to dashboard Cite

The Palaeozoic Era: an overview of land and sea ecosystems The Palaeozoic Era, lasting from 541-252 million years ago, was a time of dramatic geographical, climatic, and evolutionary changes. During this Era, life experienced a tremendous transformation and many critical macroevolutionary events took place, including important biotic radiations and diversifications, and three of the five major mass extinctions on the Earth history (Raup & Sepkoski 1982). The advent and diversification of most modern metazoan phyla occurred during the Cambrian and Ordovician periods, in the so-called Cambrian Explosion and Great Ordovician Biodiversification Event (GOBE) (Servais et al. 2010). During the Ordovician, tectonic movements lead to a global cooling that culminated in the Hirnantian glaciation and the first of the five major extinction crisis (Sheehan 2001). Shortly after, life recovered and land was colonized during the Silurian by plants and different groups of arthropods, establishing the first forests during the Devonian (Behrensmeyer 1992). The land transformation caused drastic terrestrial changes with the development of new habitats that allowed the appearance of freshwater ecosystems with increasingly complex ecological interactions (Scheckler 2006). In this context, the colonization of terrestrial environments took place by the first tetrapods, constituting one of the most important events in the evolutionary history of vertebrates (Niedźwiedzki et al. 2010). At the same time, diversity-saturation in marine benthic habitats and the high abundance of planktonic food lead to the occupation of the water column by many animal groups, an event known under the name of "the Devonian Nekton Revolution" (Klug et al. 2009). At the end of the Devonian Period, a second major extinction episode occurred at the Frasnian-Famennian boundary in both marine and terrestrial ecosystems (Barash 2016). Life flourished again during the Carboniferous with unprecedented levels of atmospheric oxygen, which lead to the evolution of unusual gigantic body sizes in several non-related groups of animals (Harrison et al. 2010). The end of the Palaeozoic Era was marked by the greatest extinction of the Phanerozoic Eon, the Permo-Triassic extinction, which entailed the loss of as much as 95% of all species on Earth (Benton & Twitchett 2003). All these key events have determined in a large extent the later evolutionary history of life and, as consequence, their study is critical for achieving a proper understanding of the Mesozoic and Cenozoic eras, as well as explaining the current biological, taxonomical and ecological diversity. Fossil Record provides a unique opportunity in this sense, and therefore its understanding is one of the primary goals of palaeontology. This requires undoubtedly a multidisciplinary approach, including systematic, palaeogeographic, palaeoecologic and evolutionary studies that, in a lower scale, are represented in the special volume herein published, grouping some of the contributions presented at the special workshop ...

show abstract

Palaeozoic evolution of animal mouthparts

Cited by 38 publications

References 30 publications

Phylogenetic analysis of the Archaeocidaridae and Palaeozoic Miocidaridae (Echinodermata, Echinoidea) and the origin of crown group echinoids

Phylogenetic analysis of the Archaeocidaridae and Palaeozoic Miocidaridae (Echinodermata, Echinoidea) and the origin of crown group echinoids

Sediment disturbance by Ediacaran bulldozers and the roots of the Cambrian explosion

Life in the Palaeozoic: an overview of land and sea ecosystems

Contact Info

Product

Resources

About