ArticleProceedings of the National Academy of Sciences of the United States of America2015
A superarmored lobopodian from the Cambrian of China and early disparity in the evolution of Onychophora.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
33 citing papers in PubMed.
- Polychaete annelids from the earliest Cambrian Period.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Palaeocampa anthrax, an armored freshwater lobopodian with chemical defenses from the Carboniferous.Communications biology · 2025Article
- Early evolvability in arthropod tagmosis exemplified by a new radiodont from the Burgess Shale.Royal Society open science · 2025Article
- Exotic cuticular specializations in a Cambrian scalidophoran.Proceedings. Biological sciences · 2025Article
- Preservation and early evolution of scalidophoran ventral nerve cord.Science advances · 2025Article
- CAT-Posterior Mean Site Frequencies Improves Phylogenetic Modeling Under Maximum Likelihood and Resolves Tardigrada as the Sister of Arthropoda Plus Onychophora.Genome biology and evolution · 2025Article
- Article
- Organ systems of a Cambrian euarthropod larva.Nature · 2024Article
- Cambrian euarthropodiScience · 2024Article
- Cretaceous amber inclusions illuminate the evolutionary origin of tardigrades.Communications biology · 2024Article
- Discovery of diversePeerJ · 2024Review
- Cambrian lobopodians shed light on the origin of the tardigrade body plan.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- A multiscale approach reveals elaborate circulatory system and intermittent heartbeat in velvet worms (Onychophora).Communications biology · 2023Article
- Divergent vertebral formulae shape the evolution of axial complexity in mammals.Nature ecology & evolution · 2023Article
- The unbearable uncertainty of panarthropod relationships.Biology letters · 2023Article
- New opabiniid diversifies the weirdest wonders of the euarthropod stem group.Proceedings. Biological sciences · 2022Article
- Phylogenomic Analysis of Velvet Worms (Onychophora) Uncovers an Evolutionary Radiation in the Neotropics.Molecular biology and evolution · 2021Article
- Ancestral morphology of Ecdysozoa constrained by an early Cambrian stem group ecdysozoan.BMC evolutionary biology · 2020Article
- Cuticular reticulation replicates the pattern of epidermal cells in lowermost Cambrian scalidophoran worms.Proceedings. Biological sciences · 2020Article
- Ecdysis in a stem-group euarthropod from the early Cambrian of China.Scientific reports · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We describe Collinsium ciliosum from the early Cambrian Xiaoshiba Lagerstätte in South China, an armored lobopodian with a remarkable degree of limb differentiation including a pair of antenna-like appendages, six pairs of elongate setiferous limbs for suspension feeding, and nine pairs of clawed annulated legs with an anchoring function. Collinsium belongs to a highly derived clade of lobopodians within stem group Onychophora, distinguished by a substantial dorsal armature of supernumerary and biomineralized spines (Family Luolishaniidae). As demonstrated here, luolishaniids display the highest degree of limb specialization among Paleozoic lobopodians, constitute more than one-third of the overall morphological disparity of stem group Onychophora, and are substantially more disparate than crown group representatives. Despite having higher disparity and appendage complexity than other lobopodians and extant velvet worms, the specialized mode of life embodied by luolishaniids became extinct during the Early Paleozoic. Collinsium and other superarmored lobopodians exploited a unique paleoecological niche during the Cambrian explosion.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.