Kamala Rao
Dr Katie StrangHere’s some wee 330 million year old crinoid ossicles that wonderfully illustrate their five-fold radial symmetry. Nature is awesome 🖤 #ScottishFossils #ScottishGeology
Mark H@palaeokatie If you'd told me this was a collection of buttons from my mum's sewing box I'd have believed you as well.
Schrödinger's Prat@neonbubble @palaeokatie I was going to go with Lego Technic gears.
Sam L.
Tattie (old account)@neonbubble haha, they do look like buttons 😀
Michelle-Tessiah@neonbubble @palaeokatie I was gonna comment the same thing haha
reo eveleth@palaeokatie Frantically googling "crinoid ossicles"
@roseveleth when the crinoid was alive individual ossicles (also called columnals) would have been held together by soft tissue, forming the animal’s stem. The stem was used to anchor the crinoid to the sea floor 😊
Paul Czege@palaeokatie
Fairy coins are legal tender at all goblin markets!
Fairy coins are legal tender at all goblin markets!
Kate Watson@palaeokatie At least two of those were definitely in my granny’s button tin 😂
Edde@palaeokatie time can be mind boggling. 330 million years… if they lived a meter ago, the oldest humans are a mere millimeter back in time. 🤯 And ALL of our history, known and unknown or reconstructed from scraped bones and pieces of clay pots, fits in that millimeter. 🤯²
Esther 
🌱🐾🍋 #fcknzs@edde yeah it’s cool! And crinoids still exist today so their record extends for 500 million years 😀
🌿Felis on the Side🌿@palaeokatie oh my goodness I thought they were tiny buttons hahaha
King Naga Calyo Lucere-Delphi@palaeokatie @felisramblious I used to love playing with fossils like those as a kid and pretending they were like money.
Aviva Gary
For the love of humanity@palaeokatie
Daughter now looking up ossicles. Thanks!
Daughter now looking up ossicles. Thanks!
@equalitysiren there’s something good info on the British Geological Survey website 😀 https://www.bgs.ac.uk/discovering-geology/fossils-and-geological-time/crinoids/
@palaeokatie
Thank you for the link!
Thank you for the link!
Melissa BearTrix 🏳️⚧️No way as beautiful as your little ones
Giggles
These are thread dies
The smallest one there is 0.6mm
Hugz & xXx
@melissabeartrix these are adorable 😍😍😍
W_Dräger 🦉@palaeokatie These are my favorite fossils and will forever have a special place in my heart 💚
@Cosmic_owls they’re one of my favourites too 🖤
Le Monolecte 😷🤬🐧 
En vrai, il y avait une autre civilisation humanoïde à l’époque et manifestement, ils avaient des petits doigts vu la taille de leurs boutons de manchette.
StefGo@palaeokatie Thank you for a great ALT Text! And I also want to say; I was team button, before I read your text. Team lego gears: naah
;-)
;-)
@StefGo you’re welcome 😀 I’m on team button too 🤣
Uncle Vinny
Wendy MsGator 🐊I would seriously have mistaken these for antique buttons.
Hudson@palaeokatie very cool
FirefighterGeek 
@palaeokatie Mathamals!
John Lorimer@palaeokatie I had done lovely crinoid fossils as a child in the 70s and have no idea what happened to them. 😔
NoctisEqui 🇺🇦🇵🇸🇪🇹🏳️🌈How beautiful. I’m surprised someone didn’t call them ‘faery money’ in the WayBack. They would make nice jewelry, real conversation pieces.
viNomadic
Blaft Publications(To the tune of My Favorite Things)
Feathery pinnules and calcified calyx
Lovely binomial names in italics
Smol pentaradial buttons so cute
If only I could boop a crinoidal snoot
Henkka Laukka@palaeokatie At first glance thought those were buttons for jeans!
anomalocaris@palaeokatie To think they were once living creatures! So intricate and fine, like filigree jewelry turned to stone.
Schreibmax@palaeokatie Amazing!
At first look I thought they were slightly corroded serrated washers.😂
At first look I thought they were slightly corroded serrated washers.😂
Michael Gemar@palaeokatie @PTR_K They remind me of this:
Michael Busch@palaeokatie @astrokiwi The crinoids in the 440-million-year old limestone under my house in Minnesota still have five-fold symmetry, but it is not so dramatic.
Now I am wondering about echinoderm evolution...
Simon LucyAlien buttons, so now we know aliens have the equivalent of thumbs.
Heliograph
Kent Brewster@palaeokatie ooh now I want these as buttons on a crinoid-print aloha shirt!
Getzler Lab at KenyonCollege
k4rizma🏳️⚧️Woman In Progress@palaeokatie legit thought I was looking at some funky buttons for a minute
Thats wild!