Rockhounding.org

Midco Locality 4

Oklahoma
Directions
Next site in OklahomaMidco Locality 12 · 0.1 mi

Can I collect here?

Pro
See who owns this land and whether it is claimedPro shows the owner, the claim on this spot and every claim within a mile.
Read the collecting rules by land type

Based on our latest records, with claims updated from the BLM on Oct 15, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

0.1 miMidco Locality 12Fossil0.8 miMidco Locality 8Fossil1 miMidco Locality 15Fossil

More fossil sites in Oklahoma

See them all

More sites in Oklahoma

View all Oklahoma sites
The Market

New on the Market

Native American arrowheadNative American arrowhead$20cubedmoons3Browse the Market

Found something here? List it for sale

About Midco Locality 4

Midco Locality 4 is a fossil collection site in Oklahoma, cataloged in the Paleobiology Database. Fossils here come from the Wellington Formation, dated to the Artinskian (290.1–283.3 million years ago). The depositional environment is recorded as lacustrine indet and the tectonic setting is cratonic basin. Documented finds include Asthenohymen apicalis, Artinska ovata, Lisca minuta, Crinoedischia noblensis.

Geologic setting

Formation
Wellington
Geologic interval
Artinskian
Age
290.1–283.3 Ma
Depositional environment
lacustrine indet.
Tectonic setting
cratonic basin
Recorded occurrences
4
Geology notes

Salty playa lake. The lower layer shows sedimentational and organic features which suggest that it was laid down close to the shore and that most of its biota was washed into the lake. The matrix and biota of the middle layer, which is highly irregular and characterized by pink partings, were probably transported to the water by violent dust storms. The upper layer is highly argillaceous, and was deposited under strongly saline conditions; insects are rare but they are very well preserved.

Locality notes

NE1/4 of NE1/4, Sec. 34, T22N, R1W.

Fossils found here

Asthenohymen apicalis
Insecta · Asthenohymenidae
Artinska ovata
Insecta · Lemmatophoridae
Lisca minuta
Insecta · Lemmatophoridae
Crinoedischia noblensis
Insecta · Proparagryllacrididae

Records and references

Data: Paleobiology Database collection 104820 (CC BY 4.0) — view the source record

Getting there

No directions yet.

How hard is it?

Getting there
– / 5
Finding anything
– / 5
Votes
0

Trip reports

No trip reports yet.

Questions about Midco Locality 4

Can you collect at Midco Locality 4?

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 Midco Locality 4?

Fossil.

Comments

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

No comments yet.

What to bring

The whole kit
  • Estwing E3-22P Rock PickThe industry-standard 22oz geological hammer. One-piece forged steel with shock-reduction grip.See it on AmazonCompare picks
  • Clear Anti-Fog Safety Glasses (4 Pack)Adjustable, anti-fog lenses for clear vision in any conditions.See it on AmazonCompare picks
  • Watertight Medical KitCompact, waterproof first aid kit with bandages, moleskin, and field essentials.See it on AmazonCompare picks
  • Southwest Treasure Hunter's Gem and Mineral GuideWhether you're digging for the first time or are an experienced rockhound or "prospector," with a simple rock hammer and...See it on Amazon

As an Amazon Associate we earn from qualifying purchases.

Meteorite nearbyA 74.6 kg stony meteorite was found at Hunter in 1962, 26 miles from here.

Source: Paleobiology Database.