Bthorisonis

Bthorisonis is a hypothetical genus of extinct marine reptiles, theorized to have existed during the Late Triassic period. While no direct fossil evidence definitively attributed to Bthorisonis has been discovered, its existence is inferred from certain unique geological formations and the potential evolutionary links between known Triassic marine fauna. The name Bthorisonis is derived from ancient Greek and Latin, roughly translating to "thorny tooth bearer," a speculative description based on the interpretation of trace fossils that might suggest unusual dentition.

The proposed environment for Bthorisonis would have been shallow, warm marine waters, characteristic of many Late Triassic continental shelves. Researchers speculate that if Bthorisonis did exist, it occupied a niche similar to some early ichthyosaurs or placodonts, possibly as a herbivore or a mollusk-eating predator. The theoretical morphology of Bthorisonis often depicts a streamlined body, a relatively short neck, and specialized, robust teeth adapted for crushing or grinding. However, this remains purely conjectural due to the lack of skeletal remains. The scientific community largely regards Bthorisonis as a theoretical placeholder in evolutionary studies, awaiting concrete fossil evidence for confirmation or refutation. Its significance lies primarily in stimulating further paleontological research into the diversity of Late Triassic marine ecosystems.