Early #JawlessFish was Filter-Feeder, #Paleontologists Find https://www.sci.news/paleontology/rhinopteraspis-dunensis-12846.html

The three-dimensionally articulated oral apparatus of a #Devonian heterostracan sheds light on feeding in #Palaeozoic jawless fishes https://royalsocietypublishing.org/doi/10.1098/rspb.2023.2258

"The images revealed the structure and arrangement of finger-like bones that project from the lower lip of the #animal’s mouth, which the #scientists believe acted to control the mouth’s size and shape as it captured food particles from surrounding water"

#NewSpecies of #Lamprey #Fish Documented in #California. The #JawlessFish Play an Important Ecosystem Role https://www.ucdavis.edu/climate/news/new-species-lamprey-fish-documented-california

#Lampreys in California (Lampetra spp. and Entosphenus spp.): Mitochondrial phylogenetic analysis reveals previously unrecognized lamprey diversity. By Grace Auringer et al. https://afspubs.onlinelibrary.wiley.com/doi/10.1002/nafm.10959

"Lampreys are boneless, jawless fish with #eel-like bodies that date back over 350 million years"