Holocystites (Sepulticystis) spangleri-Triamara tumida Assoc., Middle Osgood Lst
Can I collect here?
ProBased on our latest records, with claims updated from the BLM on Oct 3, 2026. Land and claims can change quickly, so check before you go.
Minerals on record here
1 mineralRecorded here: fossil.
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About Holocystites (Sepulticystis) spangleri-Triamara tumida Assoc., Middle Osgood Lst
Geologic setting
- Formation
- Osgood Limestone
- Geologic interval
- Telychian to Wenlock
- Age
- 438.6–426.7 Ma
- Depositional environment
- deep subtidal indet.
- Tectonic setting
- cratonic basin
- Recorded occurrences
- 19
"diploporites mostly thecae...Most of the larger skeletal debris is echinodermal...brachiopods mostly articulated...There is little indication of current or wave action, but some of biogenic reworking. Echinoderm holdfasts not seen, pelmatozoan root systems rare...most likely slightly restricted qiet offshore basin with low to moderation sedimentation rate, most likely outer BA3-4"\r\n\r\nSEP environmental call based on given information and knowledge of regional geology
Type loc.: Stream exposure along Big Creek, Jefferson Proving Grounds, NE1/4 SE1/4 NW1/4 sesc. 10, T5N R10E, San Jacinto 7.5' quad, Jefferson County. SE Indiana Silurian outcrop belt. Also known from Romeo Member, Joliet Dolomite, NE Illinois.
Fossils found here
Records and references
Data: Paleobiology Database collection 26806 (CC BY 4.0) — view the source record
Getting there
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Questions about Holocystites (Sepulticystis) spangleri-Triamara tumida Assoc., Middle Osgood Lst
Can you collect at Holocystites (Sepulticystis) spangleri-Triamara tumida Assoc., Middle Osgood Lst?
It depends on who owns the land and whether a mining claim covers it. BLM land usually allows hand collecting for personal use, national parks allow none, and private land needs the owner’s permission. Pro members see the owner and any claims at this spot.
What minerals are found at Holocystites (Sepulticystis) spangleri-Triamara tumida Assoc., Middle Osgood Lst?
Fossil.
Comments
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Source: Paleobiology Database.