These display a spinous process at the back, as in both Holochilus and Lundomys.
From the en.wikipedia.org
All the segments are destitute of pedicles, laminae and spinous processes.
From the en.wikipedia.org
The device is guided along the midline of the spine, starting at the spinous process and finishing at the top of the anal crease.
From the sciencedaily.com
These are columns of flattened, spinous cells, with roughly an average diameter of 50 micrometres and a length of 300 micrometres.
From the en.wikipedia.org
Like Anomalocaris, Hurdia had a segmented body with a head bearing a pair of spinous claws and a circular jaw structure with many teeth.
From the sciencedaily.com
As in Holochilus, the zygomatic plate, the flattened front portion of the cheek bone, is expansive and produced into a spinous process at the anterior margin.
From the en.wikipedia.org
More examples
Having spines; "the dorsal fin is spinous"
Acanthoid: shaped like a spine or thorn
Spinosity is the second EP release by Australian pop-rock band The Sharp. It was recorded at Platinum Studios in Melbourne, Australia. The tracks "Talking Sly" and "Caught in the Deep" later went onto the This is the Sharp album.