Fossil Hunting in North Carolina

North Carolina’s coastal plain is one of the most fossil-rich regions on the East Coast. The combination of Miocene phosphate deposits near Aurora, Eocene limestone near Castle Hayne, and Cretaceous marine formations across the inner coastal plain gives collectors access to hundreds of millions of years of marine life — all in a state where access is excellent and the climate is mild.

Why North Carolina?

North Carolina’s coastal plain is built on a thick wedge of sedimentary rock deposited over the past 100+ million years as ocean levels rose and fell across the low-lying eastern seaboard. The most productive collecting targets three geological windows:

Miocene-Pliocene (roughly 23-3 million years ago): The Pungo River and Yorktown formations, spectacularly exposed in the phosphate mines near Aurora, record a warm shallow sea teeming with sharks, whales, dolphins, sea turtles, and fish. The phosphate-rich sediments concentrate bones and teeth, making Aurora one of the highest-density fossil sites in eastern North America.

Eocene (~55-34 million years ago): The Castle Hayne Limestone near Wilmington preserves a tropical marine ecosystem with beautiful echinoids, bryozoans, corals, and shells from a greenhouse-warm world.

Late Cretaceous (~85-66 million years ago): The Peedee and Black Creek formations in the inner coastal plain contain marine fossils from the age of dinosaurs — ammonites, oysters, mosasaur teeth, and shark teeth from Cretaceous seas.

The offshore continental shelf also continuously erodes and deposits fossils on barrier island beaches, making beach collecting productive from Topsail Island south through Wrightsville and Kure Beach.

What You’ll Find

Shark teeth (the star of the show):

• Megalodon (Otodus megalodon) — Massive teeth up to 6+ inches. Aurora spoil piles have produced extraordinary specimens. Beach finds are typically smaller.
• Mako sharks (Isurus hastalis, I. desori) — Sleek, blade-like teeth. Common at Aurora.
• Great white ancestor (Carcharodon hastalis) — Large, triangular teeth without serrations.
• Snaggletooth (Hemipristis serra) — Curved, heavily serrated teeth. Very common.
• Bull shark (Carcharhinus species) — Small, broad teeth. Extremely abundant.
• Sand tiger (Carcharias taurus) — Slender teeth with prominent side cusps.
• Tiger shark (Galeocerdo species) — Distinctive cockscomb-shaped teeth.
• Hammerhead (Sphyrna species) — Small, triangular teeth.
• Sixgill and sevengill sharks (Hexanchus, Notorhynchus) — Distinctive comb-shaped lower teeth.
• Crow shark (Squalicorax) — From the Cretaceous sites, not Aurora.
• Goblin shark (Scapanorhynchus) — Cretaceous, with distinctive narrow teeth.

Marine mammal fossils:

• Whale vertebrae, ribs, and ear bones (tympanic bullae)
• Dolphin teeth and bone fragments
• Manatee / sea cow ribs

Other vertebrate fossils:

• Sea turtle shell and bone
• Ray dental plates (eagle ray and cownose ray plates are common at Aurora)
• Crocodilian teeth
• Fish vertebrae and teeth (drum, sheepshead)
• Bird bone (rare)

Invertebrate fossils:

• Echinoids (sea urchins) — especially in the Eocene Castle Hayne Limestone
• Scallops, oysters, and clams
• Gastropod shells
• Coral colonies
• Bryozoans
• Barnacles

Best Time to Visit

• After storms (especially hurricanes and nor’easters): Storm surge and heavy wave action erode offshore deposits and dump fresh fossils on beaches. The days following a storm are prime time on Topsail, Wrightsville, and Kure beaches.
• Low tide: Beach collecting is always best at low tide when more gravel and shell hash is exposed.
• Spring and fall: Comfortable temperatures, fewer beach crowds than summer, and active storm seasons can refresh beach deposits.
• Summer: Warm and crowded but still productive. The Aurora Fossil Museum is open year-round.
• Winter: Cooler but still mild by East Coast standards. Winter storms can be very productive for beach collecting.

Tips for North Carolina Collecting

• Start at the Aurora Fossil Museum. This free museum is the single best fossil collecting experience in North Carolina. The outdoor spoil piles — gravel and sediment from the nearby phosphate mine — are stocked with Miocene and Pliocene fossils. You can spend hours sorting through material and come away with dozens of shark teeth, ray plates, bone fragments, and shells. Bring a small trowel, a screen/sieve, and containers for your finds.
• Work the tide line on beaches. On barrier island beaches, fossils concentrate in the gravel and shell hash along the waterline. Walk slowly, scanning for dark triangular shapes among the lighter shells. The “fossil eye” comes with practice — once you find your first shark tooth, you’ll start seeing them everywhere.
• Use a sand scoop or sieve. On beaches, a small mesh scoop or kitchen colander lets you sift through surf-zone gravel quickly.
• Go early on Topsail. The most accessible beaches get picked over quickly in summer. Early morning at low tide gives you first pick.
• Explore the Castle Hayne area for variety. If you want something beyond shark teeth, the Eocene echinoids and invertebrates near Wilmington are beautiful and different from the Miocene material at Aurora.
• Visit the North Carolina Museum of Natural Sciences in Raleigh. It has outstanding paleontology exhibits including “Willo” the Thescelosaurus and a mounted Acrocanthosaurus.
• Be cautious about accessing the PCS/Nutrien mine directly. The active phosphate mine is private property and not open to the public. Collect only from the designated museum spoil piles.
• Inland Cretaceous sites in the sandhills and inner coastal plain (Elizabethtown, Clinton, Goldsboro areas) can produce ammonites, oysters, and occasional marine reptile fossils, but access is mostly through private land and active quarries.

Collecting Sites

Legal Rules for North Carolina

Key Geological Formations

• Pungo River Formation (Miocene)
• Yorktown Formation (Pliocene)
• Castle Hayne Limestone (Eocene)
• Peedee Formation (Late Cretaceous)
• Black Creek Formation (Late Cretaceous)

Local Fossil Clubs & Museums

• Aurora Fossil Museum
• North Carolina Fossil Club
• North Carolina Museum of Natural Sciences
• Cape Fear Mineral & Gem Society
• Tar River Fossil Club