Trumbo's Anthill is a fossil collection site in Garfield, Montana, cataloged in the Paleobiology Database. Fossils here come from the Hell Creek Formation, dated to the Lancian (72.2–66 million years ago). The depositional environment is recorded as coarse channel fill. Documented finds include Mesodma formosa, Cimolodon nitidus, Meniscoessus robustus, Alphadon, Protolambda florencae, Neurankylus eximius.

Geologic setting

Formation: Hell Creek
Geologic interval: Lancian
Age: 72.2–66 Ma
Depositional environment: coarse channel fill
Recorded occurrences: 44

Fossils found here

Mesodma formosa

Mammalia · Neoplagiaulacidae

Cimolodon nitidus

Mammalia · Cimolodontidae

Meniscoessus robustus

Mammalia · Cimolomyidae

Alphadon

Mammalia · Alphadontidae

Protolambda florencae

Mammalia · Pediomyidae

Neurankylus eximius

Reptilia · Baenidae

Cryptodira

Reptilia

Adocus

Reptilia · Adocidae

Parasaniwa wyomingensis

Reptilia · NO_FAMILY_SPECIFIED

Myledaphus bipartitus

Chondrichthyes · Rhinobatidae

Amia fragosa

Osteichthyes · Amiidae

Amia uintaensis

Osteichthyes · Amiidae

Lepisosteus occidentalis

Osteichthyes · Lepisosteidae

Osteichthyes

Scapherpeton tectum

Amphibia · Scapherpetontidae

Habrosaurus dilatus

Amphibia · Sirenidae

Opisthotriton kayi

Amphibia · Batrachosauroididae

Amphibia

Champsosaurus natator

Reptilia · NO_FAMILY_SPECIFIED

Trionychidae

Reptilia · Trionychidae

Odaxosaurus piger

Reptilia · Anguidae

Borealosuchus sternbergii

Reptilia · NO_FAMILY_SPECIFIED

Sauria

Reptilia

Brachychampsa montana

Reptilia · Alligatoridae

Protocaiman

Reptilia · Alligatoridae

Chirostenotes

Reptilia · Caenagnathidae

Crocodylidae

Reptilia · Crocodylidae

Coeluridae

Reptilia · Coeluridae

Theropoda

Reptilia

Thescelosaurus

Ornithischia · Thescelosauridae

Hadrosauridae

Ornithischia · Hadrosauridae

Ceratopsidae

Ornithischia · Ceratopsidae

Reptilia

Baenidae

Reptilia · Baenidae

Anura

Amphibia

Champsosaurus

Reptilia · NO_FAMILY_SPECIFIED

Amia

Osteichthyes · Amiidae

Lepisosteus

Osteichthyes · Lepisosteidae

Dinosauria

Reptilia

Elopiformes

Osteichthyes

Aves

Rajiformes

Chondrichthyes

Richardoestesia

Reptilia · Dromaeosauridae

Saurornitholestinae

Reptilia · Dromaeosauridae

Records and references

Data: Paleobiology Database collection 14639 (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 Trumbo's Anthill

Can you collect at Trumbo's Anthill?

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 Trumbo's Anthill?

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 Amazon Compare picks
Clear Anti-Fog Safety Glasses (4 Pack)Adjustable, anti-fog lenses for clear vision in any conditions.See it on Amazon Compare picks
Watertight Medical KitCompact, waterproof first aid kit with bandages, moleskin, and field essentials.See it on Amazon Compare picks
Northwest 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.

Source: Paleobiology Database.