In this article, we are going to address the topic of Nematoida from different perspectives and angles, with the aim of providing a comprehensive and complete view on this topic. We will analyze its impact in different contexts, its evolution over time, as well as the different opinions and positions that exist on the matter. Nematoida is a topic of current relevance that arouses great interest and debate, which is why it is essential to address it in a rigorous and exhaustive manner. Through this article, we aim to offer our readers a detailed and enriching vision of Nematoida, with the aim of contributing to the knowledge and understanding of this particular topic.
Its position within Ecdysozoa is uncontroversial, but the identity of their closest relatives has been debated. Under the Cycloneuralia hypothesis, the nematoids are considered to be closest to Scalidophora, named for the ring-shaped brains found in these animals. However, this group has seen less support in phylogenetic analyses, with the Cryptovermes hypothesis being more consistently supported, which groups the nematoids with the panarthropods, although the issue is still not completely settled.
^Howard, Richard; et al. (10 March 2022). "The Ediacaran origin of Ecdysozoa: integrating fossil and phylogenomic data". Journal of the Geological Society. doi:10.1144/jgs2021-107. hdl:2445/186596.