NOTE: I have moved to a different system for tracking, similar to the Carnegie Museum style. It is a simple CM 12345 mark. While it was nice to include the locality, year, month in the specimen, I now keep that information separate in an online database for referencing.


I need to keep order of a growing collection of specimens so I have developed the following identification system to be used on what I call Collection Pieces. These are recorded in our fossil catalog.

Therefore, an example Identification System code:

Codes shall be deconstructed as follows:

Locality codes

ALAmes Limestone
MMid Level Shale
USUpper Shale
KPieces from an Eastern Gilpin Township Locality
GPieces from a Western Gilpin Township Locality
UUnknown Origin

Consequently, identification numbers are to be added directly to specimens. I did research on different methods, in conclusion I found archival ink pens seem to be best in class. White paint appears to work well on really dark specimens.

A Catalog of Pieces

These are some of the early pieces that I have added to my collection, so far.

Identification System Collection Pieces as a Category

You can find the entire category listing here.

Examples of Identification Systems Elsewhere

I did research on identification marking and numbering systems before I developed my own. I wanted to make sure I was not missing anything before I set a standard. Here are some interesting examples in use.