Spiral Fish Coprolite or Cololite

Poo-fect Spiral
North Sulphur River Lamar County , TX
United States
Texas US
9 mm dia x 24 mm long; 11 mm wide ribbon with 1.5 mm and 2 mm spacing

The amount of detail preserved in this is specimen is amazing! It was part of the John Schulz estate collection. Its originator swam in the Late Cretaceous seas that covered Lamar County, Texas between 72.1 and 83.6 million years ago. Would you ever expect poop to look so pretty?