Talk:Pancrustacea

Merger

These seem to be two names for the same clade (Crustacea + Hexapoda). Is there any reason why the two articles should not be merged? Pancrustacea seems to be the favoured name at the present. --Stemonitis (talk) 20:36, 7 December 2010 (UTC)

 Done --Stemonitis (talk) 14:17, 8 December 2010 (UTC)

History of the idea

Who was the first to propose close relationship between Crustacea and Hexapoda? It was in 80-ties. This original view was based exclusively on morphological data. I think such a piece of information would be valuable for readers.

178.235.146.84 (talk) 18:10, 9 June 2017 (UTC)

Discuss Old References

This article extensively discusses unresolved questions about the relationships of the clades mentioned. The article currently cites 5 DNA studies all done within 4 years. It is now 8 years since the most recent reference. If DNA studies have been published at that same rate there should be 10 more papers, all of which are not referenced here. I suspect that many if not all of the questions mentioned here have been resolved by now. Nick Beeson (talk) 23:12, 2 June 2022 (UTC)

"most studies recovering Hexapoda within Crustacea" or recovering Hexapoda and Crustacea as sister clades?

Both within the same group, but more of a split rather than hexapods being a subgroup of more derived crustaceans. The cited article at some point puts: "suggests the following hypotheses for Ecdysozoa: (outgroups, (Priapulida, (Arthropoda, (Tardigrada, Onychophora)))), and Arthropoda: (outgroups, (Chelicerata, (Myriapoda, (Hexapoda, Crustacea))))."

To me that seems to indicate sister groups, whereas "Hexapoda within Crustacea" would be phrased as "[...] (Crustacea, (Hexapoda [...]." But I may be missing something. 45.167.98.230 (talk) 15:31, 9 October 2023 (UTC)

The phrasing "comprises all crustaceans, including hexapods" also seems to imply that hexapods belong within the more restrict group crustacea rather than both belonging to pancrustacea/tetraconata, with neither being within the other. — Preceding unsigned comment added by 45.167.98.230 (talk) 15:36, 9 October 2023 (UTC)

It should be "includes crustaceans and hexapods". Then the relationship is either as sister groups, which I believe was the original proposal for Pancrustacea, or nested more deeply within a paraphyletic crustacea, which is strongly supported by recent morphological and molecular studies. They are alternative hypotheses. —  Jts1882 | talk  17:03, 9 October 2023 (UTC)

Should there be a Fruit fly (Drosophila melanogaster) image on this page?

That belongs to the Phylum Insecta - is there a good reason for it being on this page? Not an expert on the topic, apologies if there's an obvious reason. Saisuman (talk) 21:28, 2 March 2024 (UTC)

@Saisuman: It is now well accepted that insects are closely related to crustaceans. The taxon Pancrustacea was created to describe the group containing the Crustacea and Hexapoda (which contains Class Insecta) as sister groups, which makes the choice of a crustacean image and an insect image appropriate. It is now known that insects are nested deep in the phylogenetic tree, with crustaceans forming a grade (paraphyletic group) with respect to Hexapoda. Insects can be considered derived terrestrial crustaceans (even as flying shrimp). —  Jts1882 | talk  07:24, 3 March 2024 (UTC)

Understood. Many thanks for the detailed reply. 52.119.85.98 (talk) 09:49, 4 March 2024 (UTC)