Cutoffasteella

Cutoffasteella is a genus of extinct bryozoans known from fossil records dating to the Early Devonian. The genus was described in 2010 by paleontologist A. Navarro based on specimens collected in the Cantabrian Basin of western Europe.

Colonies are encrusting and form delicate sheets and fan-shaped patches that range from a few square millimeters to several square centimeters. The skeleton is calcified, with a reticulate framework of small autozooids typically 0.4 to 0.8 mm in diameter. The branching pattern is regular, and some specimens preserve avicularian structures, likely used for defense or cleaning.

Cutoffasteella is placed in the family Cutoffasteellidae within Gymnolaemata. The type species is Cutoffasteella truncata; additional species described include C. plana and C. robusta.

The name combines cutoff, in reference to the truncated colony apices, with the conventional bryozoan suffix -asteella.

Fossils have been found in Early Devonian carbonates of western Europe, indicating shallow-water, reef-associated habitats. The genus is sometimes used in regional biostratigraphy to help correlate Devonian deposits and assess bryozoan diversity.