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I am fortunate enough to have such a huge amount of Middle Devonian Givetian material that I thought it best to put the older Middle Devonian stage, the Eifelian, in its own thread. There are some spectacular fossils here as well though! I thought a good place to start would be in the Formosa Reef, which I believe is quite early Eifelian. This tabulate coral and stromatoporoid reef continues similar complexes found from the Middle Silurian, see my: https://www.thefossilforum.com/topic/84678-adams-silurian/page/3/ thread from page three onwards for details. All these Formosa Reef specimens come from a delightful gift from my good friend @Monica who is a tad busy with life at the moment but is fine and still thinking of the forum. This outcrop can be found on Route 12 near Formosa/Amherstburg, Bruce County, Ontario, Canada. This beautiful-looking specimen came to me with only a third of it revealed but I managed to get it this far after nine days of painful pin prepping. Monica found another one and posted it for ID here: https://www.thefossilforum.com/topic/105528-weird-circular-imprints-formosa-reef-lower-devonian/#comment-1172285 The specimen was identified by another Canny Canadian @Kane to be the little stromatoporoid sponge Syringostroma cylindricum. Hardly a reef-builder, but gorgeous nonetheless. It does have a little thickness to it, but not much. Beautiful! Pretty thin, actually. I love this Monica, thank you!
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From the album: Trilobites
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So I posted one of these here a few years back (albeit in not as good condition) and had @piranha tell me that it belonged to Acanthopyge contusa. The match does seem good but for one thing, and I lack the vocabulary for lichid anatomy to describe the specific part so I’ve circled the area in question on my fossil and a provided A contusa partial (that one should be the last image). It’s a raised line that runs from the termination of the axial lobe to the posterior edge of the pygidium. My guy doesn’t have it, A contusa does. Is this significant? Another question, is it still true that a fully articulated specimen of Acanthopyge contusa has yet to be collected? A final question, why on earth is it so hard to find complete lichids? By far the rarest trilobite I find out here in this part of the Needmore in West Virginia and that’s just for little pieces here and there. Thanks for your time as always, hope everyone’s doing well.
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From the album: Trilobites
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From the album: Trilobites
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I wish I could say that I found this one but was able to talk a friend of mine into parting with it. This is an almost complete pygidium of the elusive giant lichid Terataspis. It was found in a remote area of Northern Ontario. The pygidium measures approximately 10 centimeters across.
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From the album: Trilobite Sketches and Drawings
Pencils (HB, F, 3H) on standard letter paper (8.5” x 11”). -
From the album: Nautiloid’s Trilobite Collection
Arctinurus boltoni Middle Silurian Clinton Group Rochester Shale Caleb Quarry Middleport, NY© Owen Yonkin 2021
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From the album: Trilobites
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From the album: Trilobites
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From the album: Trilobites
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From the album: Trilobites
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From the album: Trilobite Sketches and Drawings
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From the album: Trilobites
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Any ideas on this partial lichid? Sugar run formation. Measures about a cm. Also on the fence on the other cephalon. Proetid? Thanks for any help.
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Receiving an unprep Acanthopyge sp, the tail does not look like the typical Acanthopyge tail from just doing a quick image search. Definitely looks lichid but I'm wondering does this piece match any of the described species of Acanthopyge? Thats if it is one in the first place of course. Below is some information. AGE Middle Devonian (~393 Million Years) LOCATION Jbel Issomour, South Morocco FORMATION Jbel Issomour Middle Devonian Outcrops Would like to get this specimen preped one day as due to a medical condition I cannot prep and reveal anything further myself.
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From the album: Trilobites
Echinolichas eriopis (pygidium, neg.) Amherstburg/Lucas Fm Self-collected, imported fill, London, Canada. -
Haven't posted any trips in a while, although I've been on quite a few in the last while. This trip occurred this morning, about 15 minutes' walk from my backyard. It started with low expectations and ended in high reward. There was an area I've been returning to for the last six years that I've pretty much tapped out. During that span, it has been generous to me, although it is now transitioning into forest. I decided to take a resigned poke at an area next door to it where a new housing development has been in progress for the last year, and like a lot of these new tracts there is a permanent adjoining drainage area that are sometimes spruced up into walking trails and ponds. It was in this area that they also trucked in a substantive amount of limestone, which I'll reasonably assume is Dundee Formation as that would be the cheapest to acquire. Or, it may be Lucas Fm from nearby Ingersoll. Poking around the brutally hard grey limestone riddled with corals, I figured it would be more of the same old, same old of the Dundee. I'm not a coral person, but I did find these ones neat. Some of these were bigger than basketballs. There were at least seven distinct types of coral I encountered. Here's a tiny sample of the ones I snapped pictures of:
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From the album: Trilobite Sketches and Drawings
Reconstruction based on fragments.- 2 comments
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From the album: Trilobite Sketches and Drawings
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Took to pencil one of my favorite Trilobites, that just so happens to hail from my immediate area of Western New York. Arctinurus boltoni is a Silurian Lichid Trilobite from the Rochester Shale. I found my first Arctinurus on my first visit to Caleb's Quarry Midddleport on a field trip in 1995. A very lucky find it was. My drawing was done with 2B and 4B pencils on textured paper. I have included a picture of my real Arctinurus.
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I thought I might draw a rare bug from my own Western New York area. The drawing is of the Silurian Lichid Trilobite: Dicranopeltis nereus. This particular fossil is a highly sought after specimen from the Rochester Shale; not many have been found in the renowned Caleb's quarry of Middleport, NY. Of all my drawings, this one took the longest because of all the little pustules covering the surface.
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New Rare Lichid From Morocco Joined My Collection Today
trilobiteruss posted a topic in Member Collections
Thought you would enjoy this upper Lower Ordovician lichid from near Alnif Morocco that arrived today from my good friend Malek. It turns out that while this resembles Uralichas (and out of 4 or 5 others found have been called in past Uralichas sp?) it is much older (former is Upper Ordovician) and this critter is from upper part of the Lower Ordovician NE of Zagora (near Alnif). So it has been described and is in review/press by Dr. Joan A. Vela from Spain, he told me: Dear Russ, Joan Corbacho sent me your mail. I am going to publish a paper about this trilobite. Now this paper is with the referees and will be eventualy published. If you want I can send you a pdf when published. This trilobite is a new genus and species: Nanolichas parvus VELA. By the way, the formation is Schistes des Fezouata supérieurs and the age is Arenig/Floian (Lower Ordovician). Best wishes. Dr. Joan A. Vela Nanolichas parvus VELA in press, gen. nov. and sp. nov Order Lichida, Family Lichidae Schistes supérieurs des Fezouata Formation (Upper Fezouata) Arenig/Floian Age Lower Ordovician Dra Valley, near Zagora Morocco More in next post too big to upload EDIT: Images removed by topic starter