Many archaeological arguments are based on artifact identification, but to be replicable the categories must be well defined, with researchers able to consistently identify the relevant attributes. If data are to be compared across projects or researchers, the same training and reference material should be available. Standardized visual guides for specific artifact types and contexts are valuable tools for improving identification by individuals and reducing inter-operator variation. To standardize shell temper description within Pensacola Mississippian pottery, we describe the development of a visual guide based on replicated shell-tempered pastes. We created 98 unique fired clay briquettes, varying in measured ways across four variables: shell type, particle size, particle density, and whether shell was still present or leached. The resulting briquettes were imaged and arranged for quick comparison with archaeological materials. To test the utility of this guide, we conducted a survey among professional archaeologists, assessing their confidence in and success with identifying shell temper attributes with and without the guide images. The results of the survey demonstrate the effectiveness of such tools for collaborative archaeological research. We describe the general method for producing this type of guide, which may be adapted for different pottery temper types, and provide our own images for use by others studying shell-tempered pottery.