In the late Ice Age Parade Squid a lineage of large tusked grazers are the largest Terra Squid to walk on land. Males of the largest species reach 17 feet tall and reach weights of 20 tons; they've reached what appears to be the limit for both terrestrial Tetrapods and Terra Squid without air sacs like Sauropods.
Their greatest feature is the bifurcated nasal crest reaching multiple feet high. A ring of muscle, an extension of their septum divides each nostril giving the impression that they have 4 of them.
The crest is supported by cartilage and is hollow on the inside like the crests of Hadrosaurs creating a pair of resonating chambers.
Without a larynx, all Tera Squid produce sound by forcing air through the nostrils and out their mouth but Parade Squid produce the loudest vocalization of any singular Invertebrate
The nasal structure and the skin around the males head are lined with chromatophores and photophores making the skin appear to glow in low light and the polarization of the light not visible to the human eye come together to create the most beautifully alien of displays.
With the pregnancy of their singular calf taking 18 months and then 3 years to mature females are very particular in mate choice leading to the increased complexity of the males nasal apparatus and songs.
Of course, it’s not surprising that at the same time as the largest herbivore, the Terra Squids would also produce their largest land carnivore The Brawler Saber Squid, a massive Twizzletooth that stands taller than a man and weighs 1.2 tons in large females.
Hunting in pairs both partners will attempt to ambush the prey from behind using their extremely robust forelimbs to restrain the Parade Squid behind the head to prevent the use of the tusks in defense allowing them to kill with their signature sabers on the bottom jaw.
Of course, said plan isn’t without flaw and even they avoid the adults that can weigh 17 tons more than them and stick to hunting juveniles as well as Sqogers that are too ornery and heavy set for other predators to bother hunting.