Here's why:
* Morphological species concept: This concept defines species based on shared physical characteristics. Fossils, by their nature, primarily provide information about an organism's morphology (shape, size, structure).
* Other species concepts:
* Biological species concept: This concept defines species based on reproductive isolation. It is difficult to determine reproductive isolation from fossils.
* Phylogenetic species concept: This concept defines species based on their evolutionary history. While fossils can provide clues about evolutionary relationships, it can be challenging to definitively establish a species' unique evolutionary lineage from fossil evidence alone.
Therefore, the morphological species concept is the most practical and reliable way to classify fossils, as it relies directly on the observable physical traits preserved in the fossil record.
