Muliusaka

Muliusaka is a genus of extinct ray-finned fish that lived during the Late Cretaceous period. Fossils of Muliusaka have been found in what is now North America, specifically in the Judith River Formation of Montana. These fish are characterized by their relatively small size and a distinctive arrangement of fins. Their skeletal structure suggests they were likely bottom-dwellers, inhabiting freshwater or brackish environments.

The genus Muliusaka was first described by Lance Grande in 2015. The type species, Muliusaka aquilonius, is known from several well-preserved specimens. Analysis of these fossils indicates that Muliusaka belonged to the order Amiiformes, a group of bony fish that includes the modern bowfin. However, Muliusaka exhibits several unique features that distinguish it from other amiiforms, suggesting a specialized evolutionary path.

Research into Muliusaka provides valuable insights into the diversity of freshwater fish ecosystems during the Late Cretaceous. The presence of such specialized fish alongside other known fauna from the Judith River Formation helps paleontologists reconstruct the paleoenvironment and understand the complex interactions within these ancient aquatic communities. The limited fossil record means much about Muliusaka's biology and behavior remains speculative, awaiting further discoveries.