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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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Synonym: Diacalymene ouzregui References: DESTOMBES, J. 1966. Quelques Calymenina (Trilobita) de l’Ordovicien moyen et supérieur de l’Anti-Atlas (Maroc). Notes et Memoires du Service des Mines et de la Carte Geologique du Maroc, 188 1966: 33-52.
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Hi everybody! Today i want to kindly ask you help for the correct ID of this trilobite. My choice is Morocops ovatus but obviously i prefer to listen the ideas of experts (@piranha @Kane @Tidgy's Dad and more). I'm thankful to everyone who want to participate at the topic Here are the info: Origin: Jbel Zguilma (Foum Zguid), near Alnif, Morocco Age: Emsian, Devonian Lenght: 5.5 cm / 2.16 inches The trilobite is not in my hands, the photos are from the seller. Thanks and have a wonderful weekend!
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Cool Moroccan trilobite, maybe retouched?
Max-fossils posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hey guys, Saw this very nice looking trilobite for sale at a reasonable price, so I’m thinking of buying it. However I’m curious to know whether or not the specimen may be fake/retouched/in any way artificially handled. What do you guys think? Thanks in advance! Max Declivolithus Trilobite Ordovician Period Alnif, Morocco- 13 replies
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A friend who I'm with who loves minerals found this on the road near alnif but it's something we have both never seen before and was hoping for some clues or maybe an id. Thanks Matt
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Quite a large specimen even for this quite big species. The length given is of the animal along the centre of its back, not the diameter.
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Hello, there are (purported) pyritised trilobites from the Alnif area of Morocco on the market. They are in the same grey (limestone) matrix like the usual black ones. Pyritised fossils may occur in black shales and were formed under anoxic, hydrogen sulphide-rich conditions. An example for them are the pyritised trilobites from the Hunsrueck shales from Germany. So I wonder whether pyritised trilobites can occur in the same grey limestones which usually yield the dark-grey, black or brownish trilobites which show no signs of any pyritisation. I show here as an example Metacanthina from the Alnif area, but there are also some other species with this purported sort of preservation on the market. My question: are they real or are the fakes? If so, are they faked completely, or is only the "pyritisation" faked? There are some traces of "golden colour" on the matrix of the specimen I show here (e.g., close to the glabella). This makes me think about the possibility that (possibly true) "normal" trilobites were artificially covered by a stain that gives the impression of being pyritised, or treated with a soft brass brush? Thanks, araucaria1959