Barbara M Posted December 22, 2018 Share Posted December 22, 2018 I am looking for information on what kind of fossil this may be. It is in a limestone block wall in Ontario, Canada. There is evidence of crystallization in most of the fossils and crevices. This example is almost a foot long, 4 inches in height. There are brachiopods in many of the blocks as well, and a number of fossils similar to this example. Link to comment Share on other sites More sharing options...
Peat Burns Posted December 22, 2018 Share Posted December 22, 2018 Looks like a section through an Ordovician orthoconic nautiloid 4 Link to comment Share on other sites More sharing options...
Kane Posted December 22, 2018 Share Posted December 22, 2018 +1 for nautiloid cross section. You neglected to say where in Ontario (we have spread from the Ordovician to the Devonian along the southern stretch). I am guessing by the matrix and size Ordovician, so closer to Toronto area. it is common that the “core” area (the siphuncle) will be replaced by calcite, giving it a “crystallized” appearance. 2 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Barbara M Posted December 22, 2018 Author Share Posted December 22, 2018 The fossils are in a rock wall in Oshawa Ontario, but have been moved to this location. Each block is approximately 2.5 ft tall x 2.5 ft wide x 3.5 ft long. Link to comment Share on other sites More sharing options...
Kane Posted December 22, 2018 Share Posted December 22, 2018 So about 0.7 x 0.7 x 1.0 metres? What was the material imported for? Given the number of nearby quarries, it would be likely whatever this wall is composed of would be sourced locally, thus making it very likely Ordovician in age. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Barbara M Posted December 22, 2018 Author Share Posted December 22, 2018 The stones make up a retaining wall along a busy street as the road slopes down into a ravine. Yes, it is likely locally sourced Link to comment Share on other sites More sharing options...
Ludwigia Posted December 22, 2018 Share Posted December 22, 2018 I agree with the others. Nautiloid cross section. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Kane Posted December 22, 2018 Share Posted December 22, 2018 If you join a CCFMS rock club you’d be welcome to come dig with us at the biannual St Marys quarry trip (May and October), which is right nearby in Bowmanville. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Herb Posted December 22, 2018 Share Posted December 22, 2018 +1 for cephalopod "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now