Parvohallopora question

[swish513]

So I thought I had this one figured out, but it looks like I was off. I thought I found Parvohallopora rugosa today, but I found it in the Corryville formation. According to the website I was using to research it, it is not found in that formation. So now I'm guessing Parvohallopora ramosa, but it has ridges like P. rugosa. Can P. ramosa form ridges too? From the descriptions and pictures I've seen, it doesn't have ridges, just monticules (I hope that's the right word) that are sharp and evenly spaced.

[doushantuo]

 

 

source for the above :Ernst/Nakrem(CZ.Bull.Geosc,87-1/2012),free access

 

bantamckinnbryozmonticul1738488.pdf

(about 0,7 Mb)

Paleozoic bryozoa are pretty homeomorphic,early ontogeny(ancestrula + topology of the zooids immediately surrounding it )is the best bet

for determination,plus miscellaneous cross-sections,of course

below(Parvohallopora* ancestrula,periancestrulae and secondary zooids,plus the characteristic flange("F")

*(provided Adam is right)

monticules:

podelanstmonticucpalass1979vol22bryoz_part4_pp965-982.pdf(about 2,5 MB,well worth your time,from Palaeontology)