Here's some rendered anterior and ventral views of the crazy jaw and toothplates in a young juvenile 🤩 (Lower jaw in red, upper jaw in sky blue)

To my knowledge, this is the first detailed 3D imaging of the triple ligament that tethers together the OSS, tripus, and the anterior face of the swim bladder. 12/

We described the juvenile-adult development of ICL1 along with the other Weberian ligaments, showing they are all mature by 10mm SL. 11/

Histologically, ICL1 closely resembles the interossicular ligament (IOL), with densely packed, taut collagen-1 fibers (unlike the elastin-rich suspensor ligament; SUS), suggesting it strains to hold rib 4/oss in place. 10/

We found that ICL1 bridges features of Weberian and posterior intercostal ligaments, with a unique medial attachment at a steep angle aligned with the os suspensorium (OSS), unlike the slack, flattened posterior ICLs (green). 9/

While I was segmenting the area slice by slice, working in axial/sagittal/coronal views, I noticed a small hint of soft tissue running backwards from the fourth rib, and when I segmented it, I saw that it connected rib 4 to rib 5. 6/

The Weberian apparatus (WA) refers primarily to the four heavily modified cervical vertebrae of Otophysan fish (10,000 species) that form a chain of small bones and interconnecting ligaments to connect the swim bladder to the inner ear. 2/