2023
DOI: 10.1073/pnas.2211251120
|View full text |Cite
|
Sign up to set email alerts
|

Cambrian lobopodians shed light on the origin of the tardigrade body plan

Abstract: Phylum Tardigrada (water bears), well known for their cryptobiosis, includes small invertebrates with four paired limbs and is divided into two classes: Eutardigrada and Heterotardigrada. The evolutionary origin of Tardigrada is known to lie within the lobopodians, which are extinct soft-bodied worms with lobopodous limbs mostly discovered at sites of exceptionally well-preserved fossils. Contrary to their closest relatives, onychophorans and euarthropods, the origin of morphological characters of tardigrades … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1

Citation Types

1
2
0

Year Published

2023
2023
2024
2024

Publication Types

Select...
6

Relationship

1
5

Authors

Journals

citations
Cited by 6 publications
(3 citation statements)
references
References 59 publications
1
2
0
Order By: Relevance
“…Although these phylogenetic studies disagree on the exact relationship of tardigrades to lobopodians, their recovered topologies all suggest that the limited segment number characteristic of Tardigrada is a derived state of this lineage, as predicted by the model based on analyses of AP axis patterning genes. Taken together, these results support a model in which tardigrades have lost a contiguous series of intermediate trunk segments relative to ancient lobopodians (Kihm et al, 2023).…”
Section: Kaufmansupporting
confidence: 77%
See 2 more Smart Citations
“…Although these phylogenetic studies disagree on the exact relationship of tardigrades to lobopodians, their recovered topologies all suggest that the limited segment number characteristic of Tardigrada is a derived state of this lineage, as predicted by the model based on analyses of AP axis patterning genes. Taken together, these results support a model in which tardigrades have lost a contiguous series of intermediate trunk segments relative to ancient lobopodians (Kihm et al, 2023).…”
Section: Kaufmansupporting
confidence: 77%
“…Lobopodians have an extensive Cambrian fossil record and typically exhibit many more segments than a tardigrade. Several phylogenetic analyses have recovered Tardigrada as nested within lineages that include lobopodians, that is, Tardigrada is resolved as more closely related to some lobopodians than others in these studies (Caron & Aria, 2017;Howard et al, 2020;Kihm et al, 2023;Smith & Ortega-Hernández, 2014;Yang et al, 2016). Although these phylogenetic studies disagree on the exact relationship of tardigrades to lobopodians, their recovered topologies all suggest that the limited segment number characteristic of Tardigrada is a derived state of this lineage, as predicted by the model based on analyses of AP axis patterning genes.…”
Section: Kaufmanmentioning
confidence: 83%
See 1 more Smart Citation