Connecting the environment of the ancient past with the natural and cultural history of yesterday and today.

Pseudofossils

(Fossils that really aren't!)

Egg-like

Egg-shaped fossils are usually a rounded nodule (called a concretion) that is made of a harder mineral or substance than the surrounding rock. Among the most common material are chert (composed of quartz), ironstone (siderite) and phosphatic minerals.

Below are an assortment of images of these egg-like nodules composed of chert (quartz). Concentric or irregular bands or patterns within or normal.

Banded chert concretion, Floyd - Harrison County, Indiana Round chert concretion, Floyd - Harrison County, Indiana

Chert Nodules (Concretions) - Floyd and Harrison County, Indiana

Chert concretion with irregular interior, Floyd - Harrison County, Indiana Banded chert concretion, Floyd - Harrison County, Indiana

Chert Nodules (Concretions) - Floyd and Harrison County, Indiana

Banded chert concretion (pair), Floyd - Harrison County, Indiana Chert concretion with clay-filled interior, Floyd - Harrison County, Indiana

Chert Nodules (Concretions) - Floyd and Harrison County, Indiana

Banded chert concretion (pair), Floyd - Harrison County, Indiana Flint nodule, Breckinridge County, Kentucky

Chert Nodule (Concretions)- Floyd and Harrison County, Indiana Flint Nodule - Breckinridge County, Kentucky

Flint or chert nodule, Breckinridge County, Kentucky

Chert or Flint Nodule (Concretions) - Different views of the same nodule

Flint Nodule - Breckinridge County, Kentucky

Hollow ironstone concretion

Ironstone Concretion

Ironstone concretion, Bullitt County, Kentucky

Ironstone Nodule (two views) - Bullitt County, Kentucky

Phosphatic nodule, Clark County, Indiana

Exterior Phosphatic Nodules - Clark County, Indiana Cross-section

“Not-Quite Ready for Primetime Fossils”

Bone-Like Scale, Skin & Turtle-Patterns

Wood-Like Fossils that are not what they appear

Pseudofossil Main Page

Created February 22, 2010, Updated October 15, 2010