Bryozoan, ordovician

[Dimitar]

Hello guys!

 I did some cleaning in the backyard in Deux Montagnes,  10 km North of Montreal.  In a piece of rock I found some fossils of mostly bryozoan.  Could you suggest what time these could be? I guess it is near Ordovician.  It is sedimentary,  2 layers of such sediments,  between them there is quartz  or silicium rich sedimentary layer .  The layer on the top is fragile,  layers bellow are hard. 

 

 

 

1,

 

2.

 

3,

4.

 

5.

 

6.

 

7.

 

8.

 

9.

 

Edited August 28, 2021 by Dimitar

[Dimitar]

On the other side of this piece  there are the same type of bryzoan or similar.  

Here in this region I usually see many sedimentary layers, but I don't find much fossils in it.  

These pictures bellow are from the second side,  which seems to be the bottom side.

 

2.1

 

2.2

 

2.3

 

2.4

 

2.5

 

2.6

 

2.7

 

 

2.8

 

2.9

2.10

 

2.11

Edited August 28, 2021 by Dimitar

[Dimitar]

1 hour ago, Dimitar said:

 

On picture 2.8:   I suspect this could be other type, including nautiloid.  Same part is visible on few other pictures .

 

 

 

PP. I looked at the specimen again, the layer that I suspected as Nautiloud is very thin. So it is not a Nautiloud. This is just a pattern.

Edited August 28, 2021 by Dimitar

[Misha]

I do not see anything resembling fossils in the rock you have here, just some unusual patterns

[Dimitar]

22 minutes ago, Misha said:

I do not see anything resembling fossils in the rock you have here, just some unusual patterns

This is the same as picture 4. above. Let make it more visible.

 

 

Edited August 28, 2021 by Dimitar

[Mainefossils]

I am sorry @Dimitar, but I am afraid I have to agree with @Misha, these just look like rocks. Generally, the fossil will stand out from the rock in an obvious way, with a color that at least slightly differs from that of the matrix. Also, many are bilaterally symmetrical, and exhibit a defined shape, instead of vague outlines. I think that this is a case of pareidolia.

Happy hunting! 

 

Edited August 28, 2021 by Mainefossils

[Dimitar]

45 minutes ago, Mainefossils said:

I am sorry @Dimitar, but I am afraid I have to agree with @Misha, these just look like rocks. Generally, the fossil will stand out from the rock in an obvious way, with a color that at least slightly differs from that of the matrix. Also, many are bilaterally symmetrical, and exhibit a defined shape, instead of vague outlines. I think that this is a case of pareidolia.

Happy hunting! 

 

Regards, 

Asher

Thanks Asher!

I can agree this is not so obvious..  I've seen many bryozoan.  As you said,  the fossil at least slightly differs in color, shape or texture from the matrix.  And this is how I recognize it.  There is also the symetrical pattern, zoom in to see the details in the central part,  there are 2 circles. For me it is obvious fossil ,   however I spend enough time to look at this specimen  and I know other details that I can't show on the pictures.  In addition there is a huge difference in the structure between one layer and another.  I have the whole rock in the backyard and it is full of other patterns,  but more than bryozoan I doubt if I could find on it.  

 Thanks,

D.

 

 

 

[Mainefossils]

I don't think it will be possible to ID it from the pictures, unfortunately... Maybe you could take it to the nearest museum for an in-hand evaluation? 

 

Edited August 28, 2021 by Mainefossils

[Kane]

Likely ichnofossils or simply sedimentary processes. I agree with the others.