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Helicolocellus

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As of writing this, the oldest known definitive sea sponge (to my knowledge) is Helicolocellus, a Late Ediacaran crown group sponge apparently related to Hexactinellida. Other early putative sponges have had their poriferan identity questioned, such as Otavia, which has had its sponge affinity and even biogenicity questioned by Antcliffe et al. 2014 (Giving the early fossil record of sponges a squeeze). This genus does not appear to be referenced in this article. Should it be? Tourmaline Ctenacanth (talk) 23:50, 9 January 2025 (UTC)[reply]

I edited the article to include that and Arimasia. IC1101-Capinatator (talk) 14:29, 16 January 2025 (UTC)[reply]
Thanks! Tourmaline Ctenacanth (talk) 01:51, 17 January 2025 (UTC)[reply]

Tonian

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Add possible tonian record to sponges and other confirmed huanian animais Wirth their highest non-kingdom valid group. Like this: Animal-history-cryogenian to present-possible tonian record. 2001:1308:2798:6500:E05C:23CF:2C3A:968B (talk) 01:08, 1 March 2025 (UTC)[reply]

It isn't obvious that a "possible" record should be added to any timeline; that's for known reliably-attested records. Chiswick Chap (talk) 18:27, 3 March 2025 (UTC)[reply]
Probable then? 2001:1308:268B:D300:4039:FC80:320A:801E (talk) 16:16, 4 March 2025 (UTC)[reply]
This isn't a negotiation. The timelines in all taxon articles are meant to be based on solid scientific opinion, cited in the article, that's all. Chiswick Chap (talk) 17:58, 4 March 2025 (UTC)[reply]