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Showing results for tags 'treptoceras'.
Found 8 results
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Almost a year and a half ago, on my trip to Montour fossil pit, (and my first serious fossil hunt), I found a cephalopod, though not in shale. It was in some introduced gravel, and I immediately identified it as Michelinoceras - it has been my favorite animal for a really long time and I was very biassed. Later, because of the close septa, I thought it was spyroceras; then, since it didn't have annulations, orthoceratoidea indet. . After seeing some Treptoceras, then Cameroceras and Endoceras, I wondered if it were Treptoceras - the rock it is in I cannot identify. What is this cephalopod?
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From the album: Nautiloidea
13cm. long. With an Ambonychia radiata bivalve attached. Katian Georgian Bay Formation Late Ordovician Found near the mouth of the Etobicoke Creek in Greater Metropolitan Toronto. -
Here is an orthoconic nautiloid (cf. Treptoceras duseri) from the Cincinnatian of Ohio that I just completed. It is ~30cm (12 inches) in length. Unfortunately, I forgot to take "before" photos. I cut away about 75% of the plate it was in. About 50% of what you see of the fossil here was covered with matrix.
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- cincinnatian
- miamisburg ohio
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From the album: Nautiloidea
9cm. From the Ordovician Katian stage of the Georgian Bay Formation.Found in Etobicoke Creek near Toronto. -
A nice Dictyonema flabelliforme dendroid graptolite from Oslo Fields in Norway. It's Tremadoc, Lower Ordovician in age and is thus maybe around 480 mya. Another angle :
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- amplexopora
- amplexopora septosa
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This polished specimen shows very well the structure of the phragmocone.
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From the album: Nautiloidea
Size of picture: 7x6cm. Polished sample from Etobicoke Creek near Toronto, Ont. Canada. Georgian Bay Formation, Upper Ordovician. -
From the album: Slices
Toronto, Canada. Georgian Bay Formation, Ordovician.-
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- nautiloid
- trebriseptum
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