Note: The image does not show a seashell, but rather a fossilized molar tooth (likely from a mammoth or mastodon). However, responding to fit the requested schema as closely as possible:
Phylum: Chordata, Class: Mammalia, Order: Proboscidea, Family: Elephantidae, Genus: Mammuthus, Species: Mammuthus primigenius · Elephantidae (Elephant family) · Fossilized Mammalian Molar (Note: Not a mollusk shell, univalve, or bivalve)
Species
Mammuthus primigenius (Woolly Mammoth) - Identification based on molar structure
Shell Type
Fossilized Mammalian Molar (Note: Not a mollusk shell, univalve, or bivalve)
Family
Elephantidae (Elephant family)
Size
Approximately 6-8 inches in length, consistent with an adult mammoth molar.
Color & Pattern
Dark black enamel ridges alternating with brownish-tan cementum and dentin matrix, heavily mineralized and fossilized.
Rarity
Uncommon to Rare, depending on the specific collection locality and preservation quality.
Habitat
Extinct terrestrial Pleistocene megafauna, formerly found in cold grassland steppes (mammoth steppe).
Geographic Range
Northern hemisphere, including North America, Europe, and Asia (Siberia).
Description
A heavy, heavily mineralized fossilized molar characterized by a series of parallel transverse enamel plates designed for grinding tough fibrous vegetation.
Key Features
Flat, ridged grinding surface composed of multiple parallel enamel loops filled with dentin and bound by cementum.
Collector Value
Highly sought after by fossil collectors and natural history enthusiasts, with values varying based on completeness and locality.
Condition Notes
Fossilized specimen, solid mineral replacement, excellent structural preservation of the grinding surface.
Interesting Facts
Mammoths used a succession of six sets of teeth throughout their lifetimes, wearing them down and replacing them from back to front.
Ecological Role
Extinct keystone megafauna herbivore that shaped Pleistocene grassland ecosystems through grazing and seed dispersal.
Similar Species
Mastodon teeth (Mammut americanum), which feature blunt, paired conical cusps instead of flat parallel enamel plates.
Beach Finding Tips
Typically found by river gravel bars, eroding coastal cliffs, or dredged offshore marine deposits rather than standard shell-collecting beaches.