|Isocrinid stalked crinoids from the Mariana Arc in the tropical Pacific.via NOAA|
So, the other day someone complained to me that the Echinoblog didn't do enough with fossils. So, this week FOSSIL CRINOIDS to the MAX!
The fossils below look like the ones above..kinda. Isocrinids? from the Jurassic. Image by Kevin Zim.
Some nice crinoids from the Houston Museum of Natural Science. Not sure which species. Images by malts8
Here is the Paleozoic Jimbacrinus bostocki from Australia
Cool looking Zeacrinites magnoliaeformis fr. the Mississippian-glen Dean Formation in Grayson Co., YI. Image by malts8
So, remember awhile back when I wrote this controversial post about swimming/floating crinoids?? There was this diagram that had been presented about how this one crinoid, Scyphocrinites enjoyed a pelagic type lifestyle with a positively buoyant "float"
In this case, from Camarocrinus ulrichi. Images by malts8
And down in the Cambrian we have...Gogia, an Eocrinid (a different but closely related group of echinoderms similar to proper crinoids) Lower Cambrian, from the Wheeler Shale Formation. Image by Stan Celestian
Are there echinoderms I'm not giving enough time to? Let me know!