Pyrisinellidae di Martino & Taylor, 2012

This family includes the genera:

Colony encrusting, multiserial, unilaminar. Autozooids small, distinct, rounded polygonal, longer than broad, separated by deep furrows. Gymnocyst convex, narrow, best developed proximally. Cryptocyst extensively developed, depressed, flat and densely granular, bounded by pear-shaped ridge comprising mural rim and distal rim of opesia. Opesia trifoliate. Oral spines present. Ovicell hyperstomial, globular, prominent, smooth with a dumbbell-shaped opening, resting on proximal gymnocyst of distal zooid and indented its mural rim. Intramural buds common. Closure plates depressed beneath level of cryptocyst. Avicularia interzooidal or more commonly adventitious. Distal pore chamber larger than distolateral pore chambers; pore windows oval. Ancestrula having the appearance of a small astogenetically mature autozooid with an indeterminate number of spine bases, budding a single distal zooid. (Martino & Taylor, 2012)

  1. Apiophragma (Family placement provisional)
  2. Megapora (Family placement provisional)
  3. Microblestrum
  4. Pyrisinella
  5. Ristedtia
  6. Setosinella
  7. Spinisinella
  8. Stolomicropora

The species Megapora ringens also has been questionably reassigned to this family without definition of the genus which includes it. (Martino & Taylor, 2012)

[Microblestrum imitator] [Setosinella prolifica] [Stolomicropora iota]
Microblestrum imitator
(thanks to Dennis Gordon, NIWA)
Setosinella prolifica
(thanks to Dennis Gordon, NIWA)
Stolomicropora iota
(thanks to Dennis Gordon, NIWA)

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Edited by Phil Bock
Modified on 8/2/2017
This URL is http://bryozoa.net/cheilostomata/pyrisinellidae/index.html