What kind of bryozoan?

[Rogue Embryo]

Thanks to Tim @Fossildude19 for identifying the following recent find as a bryozoan.

 

I'm trying to narrow it down to at least genus. Taking a wild stab . . . genus Parvohallopora? I can't seem to find any image that resembles this one with any degree of certainty.

 

Thanks.

Camille

 

Edited April 3, 2022 by Rogue Embryo
typo

[Fossildude19]

@FossilDAWG  @Monica

 

Unfortunately, I know very little about the Ordovician of Ontario. 

[Rogue Embryo]

Well, maybe there's not enough detail in the specimen. I'm finding bryozoan taxonomy rather confusing, and am looking for an inroad . . 

[Tetradium]

2 hours ago, Rogue Embryo said:

Well, maybe there's not enough detail in the specimen. I'm finding bryozoan taxonomy rather confusing, and am looking for an inroad . . 

Its still a new area for many of us, me included. Part of it is you have to special prep them into very thin slices then put into a microscope. It takes a lot of time!

[Rogue Embryo]

Hmmm . . . that's beyond my equipment grade. They seem to be little shape-shifters! I'll keep reading about them so I can at least learn to pick them out along a creek and identify them as bryozoans.

 

Thanks for your response!

Edited April 4, 2022 by Rogue Embryo

[Rogue Embryo]

10 hours ago, Fossildude19 said:

Unfortunately, I know very little about the Ordovician of Ontario.

I doubt that that's true, Tim!

[Fossildude19]

Well, a bit of research pulled up this mention of Stigmatella sp.

 

 

 

You may want to consider investing in Bill Hessin's book, Camille.

[Kane]

You may have some small luck consulting Bill Hessin's book on fossils of southern Ontario. Although he doesn't cover the Georgian Bay Fm specifically, many of the bryozoan taxa are fairly extended in the mid- to upper Ordovician of Ontario. I couldn't say what yours are as I don't generally collect them when I'm digging in Ontario's Ordovician, and at best I can pick out the Prasopora and Constellaria easily (neither of those genera fit in this case). 

[Rogue Embryo]

11 minutes ago, Fossildude19 said:

Well, a bit of research pulled up this mention of Stigmatella sp.

Yes, I can see the texture and bumps on my specimen. I think what's puzzling me are the two cross-sections with the sunburst pattern, which I'm not seeing in the online images.

 

12 minutes ago, Kane said:

Bill Hessin's book on fossils of southern Ontario

 

13 minutes ago, Fossildude19 said:

consider investing in Bill Hessin's book

 

Thank you both for that suggestion - it's out of print, but I should be able to photocopy it at the Reference Library here in Toronto.

[Fossildude19]

Camille,

The cross sections are typical to bryozoans. I've seen many that look similar.

[Rogue Embryo]

Great, this his helpful!