#placoderm
Live, measured metrics for the hashtag #placoderm from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #placoderm
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.online (Mastodon public tags API) · fetched 2026-09-23 23:56 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.online (Mastodon public search API) · fetched 2026-09-23 23:56 UTCLive pulse
measured · mastodon.online (Mastodon tag timeline) · fetched 2026-09-23 23:56 UTCEverything below is measured over the latest 11 public posts (spanning ~31293 hours).
Posting hours (UTC)
Languages: English (9) · Korean (1)
Avg boosts / post: 2.8
Top of the latest posts
Compare these two models of #prehistoric armoured #placoderm 'fish' in the #NottNatHist #museum #collection. I'm fond of the plaster #retro cutie, which dates to the ~1950s, while the modern 3D-printed version is breathtakingly realistic. T
Cranium of Carolowilhelmina geognostica, a placoderm fish which lived during the Devonian period - holotype. Natural Sciences Museum at the University of Zaragoza [Museo de Ciencias Naturales de la Universidad de Zaragoza]. Zaragoza / Sarag
And that's the flats and gradients on @draakvuur.bsky.social (Aston Alligator) and the revised neon #dunkleosteus. I'm going to miss the aesthetics of the airbrush scheme, but it was impossible to vector. #alligator #inflatable #placoderm #
What “placoderm” means
WikipediaPlacoderms are vertebrate animals of the class Placodermi, an extinct group of prehistoric fish known from Paleozoic fossils during the Silurian and the Devonian periods. While their endoskeletons are mainly cartilaginous, their head and thorax were covered by articulated armoured plates, and the rest of the body was scaled or naked depending on the species.
“Placoderm” on Wikipedia (CC BY-SA) →#placoderm across platforms
every network with a public tag surfaceFollow #placoderm straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/placoderm