In this article, we are going to delve into the topic of Planulozoa, exploring its different facets and relevant aspects. Planulozoa is a broad and varied topic that has captured the interest and attention of many people around the world. Through analysis and reflection, we will try to shed light on different points of view and perspectives related to Planulozoa, with the aim of providing a complete and enriching vision. Likewise, we will discuss the historical evolution of Planulozoa, its relevance today and possible implications for the future. Join us on this exciting exploration of Planulozoa and discover everything this theme has to offer!
Planulozoa is a clade which includes the Placozoa, Cnidaria (corals and jellyfish) and the Bilateria (all the more complex animals including worms, insects and vertebrates). The designation Planulozoa may be considered a synonym to Parahoxozoa. Within Planulozoa, the Placozoa may be a sister of Cnidaria to the exclusion of Bilateria. The clade excludes basal animals such as the Ctenophora (comb jellies), and Porifera (sponges). Although this clade was sometimes used to specify a clade of Cnidaria and Bilateria to the exclusion of Placozoa (against the original intention of its proposal), this is no longer favoured due to recent data indicating a sister group relationship between Cnidaria and Placozoa.
The phylogenetic tree indicates approximately how many millions of years ago (mya) the lineages split. Here, Planulozoa is shown sans Placozoa.
Planulozoa are associated with the emergence of the Zoc and ZF-NC gene domains.
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^Syed, Tareq; Schierwater, Bernd (2002-06-01). "The evolution of the placozoa: A new morphological model". Senckenbergiana Lethaea. 82 (1): 315–324. doi:10.1007/bf03043791. ISSN0037-2110. S2CID16870420.