As I have been sorting through my finds from along Lake Erie and the Penn Dixie site in Blasdell, NY I've come across some coral specimens that I think are Eridophyllum archiaci. I showed a previous specimen (E. subcaespitosum) from the Penn Dixie site that showed the budding habit of reproducing but these are individual, finger like pieces and a few have the calice preserved.
Specimen #1
Here is the preserved calice. It could use a little cleaning but you can see some of the septa.
Specimen #2 appears to be a section from near the base of an individual. You can see a curve to the corallite and a couple of support structures coming off the side.
Specimen #3
This specimen's calice is better defined and you can see that it does have a depression in the middle.
These specimens come from along Lake Erie near 18 Mile Creek and could have originated within either the Wanakah shale of the Ludlow Formation or the Windom shale of the Moscow formation. Both are Devonian period, Givetian stage.
Showing posts with label 18 Mile Creek. Show all posts
Showing posts with label 18 Mile Creek. Show all posts
Tuesday, February 4, 2014
Saturday, January 11, 2014
Atactotoechus fruticosus bryozoan from the Wanakah Shale
These next two specimens I was sure were a new genus for me but Karl Wilson corrected me and said they were Atactotoechus fruticosus. So they are the same genus as the prior specimens I showed you but these are a different species (with very similar sounding names, thanks Science!). Apparently the difference is the size and height of the monticules (the little mound like shapes that pattern the surface of the colony).
Specimen #1
A nice cross section of the colony.
Specimen #2 needs some cleaning to reveal the detail of the colony.
Karl also pointed out that Atactotoechus used to be part of the genus Monotrypa.
Both specimens were found in the Wanakah shale, Ludlowville Fm. (Givetian stage of the Middle Devonian) along the shore line of Lake Erie near Lake View, NY.
Specimen #1
A nice cross section of the colony.
Specimen #2 needs some cleaning to reveal the detail of the colony.
Karl also pointed out that Atactotoechus used to be part of the genus Monotrypa.
Both specimens were found in the Wanakah shale, Ludlowville Fm. (Givetian stage of the Middle Devonian) along the shore line of Lake Erie near Lake View, NY.
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