ArticleNature ecology & evolution2020
Varanopid from the Carboniferous of Nova Scotia reveals evidence of parental care in amniotes.
Article in Nature ecology & evolution, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 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
11 citing papers in PubMed.
- Earliest direct evidence of trophic interactions between terrestrial apex predators and large herbivores.Scientific reports · 2026Article
- Article
- Review of the tetrapod skull-neck boundary: implications for the evolution of the atlas-axis complex.Biological reviews of the Cambridge Philosophical Society · 2025Review
- Cranial osteology and neuroanatomy of the late Permian reptileRoyal Society open science · 2025Article
- Craniodental anatomy in Permian-Jurassic Cynodontia and Mammaliaformes (Synapsida, Therapsida) as a gateway to defining mammalian soft tissue and behavioural traits.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023Review
- Permian hypercarnivore suggests dental complexity among early amniotes.Nature communications · 2022Article
- Early Origins of Divergent Patterns of Morphological Evolution on the Mammal and Reptile Stem-Lineages.Systematic biology · 2022Article
- Article
- A re-assessment of the oldest therapsid Raranimus confirms its status as a basal member of the clade and fills Olson's gap.Die Naturwissenschaften · 2021Article
- The Making of Calibration Sausage Exemplified by Recalibrating the Transcriptomic Timetree of Jawed Vertebrates.Frontiers in genetics · 2021Article
- Can We Reliably Calibrate Deep Nodes in the Tetrapod Tree? Case Studies in Deep Tetrapod Divergences.Frontiers in genetics · 2020Review
Corrections and comments
- Commented on by
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Here we report on a fossil synapsid, Dendromaia unamakiensis gen. et sp. nov., from the Carboniferous period of Nova Scotia that displays evidence of parental care-approximately 40 million years earlier than the previous earliest record based on a varanopid from the Guadalupian (middle Permian) period of South Africa. The specimen, consisting of an adult and associated conspecific juvenile, is also identified as a varanopid suggesting parental care is more deeply rooted within this clade and evolved very close to the origin of Synapsida and Amniota in general. This specimen adds to growing evidence that parental care was more widespread among Palaeozoic synapsids than previously thought and further provides data permitting the identification of potential ontogeny-dependent traits within varanopids, the implications of which impact recent competing hypotheses of the phylogenetic affinities of the group.
Indexed as
Identifiers
31900446What 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.