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Yale Point, AZ (A5-1)

Navajo County, Arizona
Directions
Next site in ArizonaMNA 222-0, Yale Point · 3 mi

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Based on our latest records, with claims updated from the BLM on Oct 9, 2026. Land and claims can change quickly, so check before you go.

Minerals on record here

1 mineral

Recorded here: fossil.

3 miMNA 222-0, Yale PointFossil14 miMNA 1496, 5 km NE Many FarmsFossil14 miMNA Loc. 236: BM 10Fossil

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About Yale Point, AZ (A5-1)

Yale Point, AZ (A5-1) is a fossil collection site in Navajo, Arizona, cataloged in the Paleobiology Database. Fossils here come from the Mancos Shale, dated to the Cenomanian (100.5–93.9 million years ago). The depositional environment is recorded as carbonate indet and the tectonic setting is cratonic basin. Documented finds include Sciponoceras, Pseudoptera, Plicatula, Pycnodonte, Exogyra, Lucina.

Geologic setting

Formation
Mancos Shale
Geologic interval
Cenomanian
Age
100.5–93.9 Ma
Depositional environment
carbonate indet.
Tectonic setting
cratonic basin
Recorded occurrences
7
Geology notes

Dark olive gray, moderately indurated, with a limestone nodule band approx. middle of sample.<P>Note: Section A5 constitutes interbedded limestones and shales, but this sedimentary structure is not reflected in the descriptions of each collection, as each is often a single bed, or a portion thereof.<P><P>

Locality notes

Lat/Long actually given to 2 decimal places, but there is ambiguity as to which exact locality (of three) the collection belongs, so they been rounded to nearest minute.<P>Sweathouse Peak, Arizona, Quadrangle.<P>Turn SW on a dirt road approx. s miles SE of Rough Rock turnoff on the Navajo Hwy from Chilchibito. Proceed approx. 3.5 mils to the east, then turn west and proceed up toward cliff. The road ends at asingle hogan. Take trail up point to south of hogan.<P>

Fossils found here

Sciponoceras
Cephalopoda · Baculitidae
Pseudoptera
Bivalvia · Bakevelliidae
Plicatula
Bivalvia · Plicatulidae
Pycnodonte
Bivalvia · Gryphaeidae
Exogyra
Bivalvia · Gryphaeidae
Lucina
Bivalvia · Lucinidae

Records and references

Data: Paleobiology Database collection 3075 (CC BY 4.0) — view the source record

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Questions about Yale Point, AZ (A5-1)

Can you collect at Yale Point, AZ (A5-1)?

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 Yale Point, AZ (A5-1)?

Fossil.

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Source: Paleobiology Database.