Arachnid monophyly: Morphological, palaeontological and molecular support for a single terrestrialization within Chelicerata.
- BiologyArthropod structure & development
Increasing species sampling in chelicerate genomic-scale datasets provides support for monophyly of Acari and Arachnida
- Biology, Environmental ScienceNature Communications
The authors reconstruct the phylogeny of the Chelicerata using genomic-scale datasets, finding evidence for a monophyletic Acari and a single terrestrialisation of Arachnida.
Phylogenomic interrogation resolves the backbone of the Pseudoscorpiones Tree of Life.
- BiologyMolecular phylogenetics and evolution
Spider Origins: a Palaeontological Perspective
- Biology, GeographyArachnology
Spiders (Araneae) can be defined as spiders which have lost the telson, something which appears to have occurred multiple times among arachnids.
The Phylogeny and Evolutionary History of Arthropods
- Biology, Environmental ScienceCurrent Biology
Advancing mite phylogenomics: Designing ultraconserved elements for Acari phylogeny
- BiologyMolecular ecology resources
This work designs targeted ultraconserved genomic elements (UCEs) probes, intended for resolving the complex relationships between mite lineages and closely related arachnids, and builds a phylogeny using 13 existing Acari genomes as well as 6 additional taxa from a variety of genomic sources.
The origin and early evolution of arthropods
- Environmental ScienceBiological reviews of the Cambridge Philosophical Society
The rise of arthropods is a decisive event in the history of life. Likely the first animals to have established themselves on land and in the air, arthropods have pervaded nearly all ecosystems and…
Histaminergic interneurons in the ventral nerve cord: assessment of their value for Euarthropod phylogeny
- BiologyZoological Letters
A comprehensive review of histaminergic neurons in the ventral nerve cord of Euarthropoda is presented, finding that this character set has considerable potential to help resolve relationships within the major clades at a deeper level of taxonomy, due to the considerable variability in neurite morphology.
The evolutionary history of body organisation in the lineage towards modern scorpions
The evolution of the tagmosis in modern scorpions is considered, which is considered to be organised into three tagmata: the prosoma, the mesosoma and the metasomas, the latter two representing subdivisions of the opisthosoma.
Volcanism and palaeoclimate change drive diversification of the world's largest whip spider (Amblypygi)
- Environmental ScienceMolecular ecology
Barriers and diversification patterns identified in Acanthophrynus are reflected in the phylogeography of codistributed vertebrates and arthropods, emphasizing the profound impact of Trans‐Mexican Volcanic Belt orogeny and glacial/interglacial cycles as drivers of diversification in the Mexican Neotropics.
SHOWING 1-10 OF 60 REFERENCES
Phylogenomic interrogation of arachnida reveals systemic conflicts in phylogenetic signal.
- BiologyMolecular biology and evolution
It is shown that phylogenetic signal for the monophyly of Arachnida is restricted to the 500 slowest-evolving genes in the data set, and that outgroup selection without regard for branch length distribution exacerbates long-branch attraction artifacts and does not mitigate gene-tree discordance, regardless of high gene representation for outgroups that are model organisms.
Arthropod fossil data increase congruence of morphological and molecular phylogenies.
- BiologyNature communications
Enhanced congruence is shown between molecular and morphological phylogenies based on 753 morphological characters for 309 fossil and Recent panarthropods, which resolve hexapods within Crustacea, with remipedes as their closest extant relatives, and show that the traditionally close relationship between myriapods and hexapod is an artefact of convergent character acquisition during terrestrialisation.
EVOLUTIONARY MORPHOLOGY AND PHYLOGENY OF ARAGHNIDA
A cladistic analysis of the 11 Recent arachnid orders suggests that Arachnida is monophyletic and composed of two principal lineages, Micrura and Dromopoda.
The first phylogenetic analysis of Palpigradi (Arachnida) – the most enigmatic arthropod order
- BiologyInvertebrate Systematics
The first molecular phylogeny of palpigrades based on specimens collected in different subterranean habitats from Australia, Africa, Europe, South America and North America found monophyly of Palpigradi, Eukoeneniidae and a division of Eukeneniidae into four main clades, three of which include samples from multiple continents.
Phylogenetic position of the acariform mites: sensitivity to homology assessment under total evidence
- BiologyBMC Evolutionary Biology
The phylogenetic position of the acariform mites is examined through employing SSU, partial LSU sequences, and morphology from 91 chelicerate extant terminals, and morphological data matrices to evaluate the impact of constraining the analysis on the recovered topology when employing secondary structure as a guide for homology establishment.
Origin of spiders and their spinning organs illuminated by mid-Cretaceous amber fossils
- Biology, GeographyNature Ecology & Evolution
Two extraordinarily well-preserved Mesozoic members of Uraraneida with a segmented abdomen, multi-articulate spinnerets with well-defined spigots, modified male palps, spider-like chelicerae and a uropygid-like telson are reported.
Arthropod phylogeny revisited, with a focus on crustacean relationships.
- BiologyArthropod structure & development
Geological history and phylogeny of Chelicerata.
- Geology, BiologyArthropod structure & development
Three-dimensional reconstruction and the phylogeny of extinct chelicerate orders
- Geography, Environmental SciencePeerJ
X-ray microtomography is used to reconstruct members of two extinct arachnid orders, and a cladistic analysis of the chelicerates is presented to accompany these reconstructions, suggesting that these results are not robust to the addition of novel characters or fossil taxa.
REVIEW Evolution and systematics of the Chelicerata
- BiologyExperimental & Applied Acarology
Most morphologists, palaeontologists and molecular taxonomists agree that the Arthropoda are a monophylum, and new molecular data as well as some morphological characters show similarities which the Myriapoda share with the Chelicerata, suggesting that there is no taxon Antennata or Atelocerata.