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Found 38 results

  1. Hey everyone! New here. I have a lovely collection of trilobites and have recently purchased a large Devonian Phacops (according to description). He's over 14cm long as you can see by the photo on my hand so I wanted to check its authenticity. I've noted the nice eye detail which I know can be hard to fake. It's a VERY smelly fossil though (actually making me sneeze). Almost a cross between plaster and laundry detergent. Is there anything that could cause this if it's genuine? I will assume it's had small cosmetic enhancements but I cannot find any cracks on the matrix etc. Not even sure what the matrix is made of but it's a glittery beige. Also, would this be a phacops or would it be classed as a drotops? Thanks in advance!
  2. Alrighty folks, I know the trilobite "fake versus real" is almost a cliché around here, but I thought I would ask any how. I bought this several years ago online...and it was advertised as a "phacops trilobite from Morocco". (Oh, I can hear the groans). LOL. So after the fact, I did some research: It has the detailed eyes and nose, it has the supposed common fracture through the "trilobite" and the matrix, and as far I can tell, I don't see any casting "bubbles". Sooooo, a probability of real, fake...or inconclusive? If it's real...cool, if fake...oh well I learned my lesson. Henry
  3. Hi, I spotted this trilobite,pretty sure its a phacops, online for a relatively cheap price. I was wondering If it was real because it looks really good and large. He put a lighter for scale on the picture (guessing its 10 to 15cm) What do you think? Regards
  4. Phacops Trilobite Fossil, Morocco a.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Phacops Trilobite Fossil Morocco Middle Devonian 393-383 million years ago Phacops is a genus of trilobites in the order Phacopida, family Phacopidae, that lived in Europe, northwestern Africa, North and South America and China from the Early until the very end of the Devonian, with a broader time range described from the Late Ordovician. It was a rounded animal, with a globose head and large eyes, and probably fed on detritus. Phacops is often found rolled up, a biological defense mechanism that is widespread among smaller trilobites but further perfected in this genus. Like in all sighted Phacopina, the eyes of Phacops are compounded of very large, separately set lenses without a common cornea (so called schizochroal eyes), and like almost all other Phacopina, the articulate mid-length part of the body (or thorax) in Phacops has 11 segments. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Phacopida Family: †Phacopidae Genus: †Phacops
  5. Phacops Trilobite Fossil, Morocco a.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Phacops Trilobite Fossil Morocco Middle Devonian 393-383 million years ago Phacops is a genus of trilobites in the order Phacopida, family Phacopidae, that lived in Europe, northwestern Africa, North and South America and China from the Early until the very end of the Devonian, with a broader time range described from the Late Ordovician. It was a rounded animal, with a globose head and large eyes, and probably fed on detritus. Phacops is often found rolled up, a biological defense mechanism that is widespread among smaller trilobites but further perfected in this genus. Like in all sighted Phacopina, the eyes of Phacops are compounded of very large, separately set lenses without a common cornea (so called schizochroal eyes), and like almost all other Phacopina, the articulate mid-length part of the body (or thorax) in Phacops has 11 segments. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Phacopida Family: †Phacopidae Genus: †Phacops
  6. when i was surfing over the internet i found this beautifull phacops. but i don't know a lot about these things. so does anyone know if this is real. i saw this other trilobite, it's from the same seller, but the tail looks a bit fishy. thats why i just wanted to know if the other one is real too. this is the fishy one, the tail doesn't look right.
  7. Drotops Megalomanicus

    Drotops Megalomanicus found it mislabeled and under priced at the mall today at a random booth, was a very unexpected pleasure measures somewhere around 5.3-5.4 inches, the condition is not to bad.
  8. HI guys, I know Morocco fossils are a general no no for entry level folks like me. However this particular piece caught my eye and I quite like how it looks. It has 2 Phacops and 1 Paralejurus on the same matrix Would be great if I can get some more insight from the experts on this forum. Thank you.
  9. Hello all- I recently acquired another "fossil" from a guy that lives in Texas who supposedly bought this piece from a reputable dealer who claimed to have done all the work on it. This is my first time collecting trilobites, and I know that so many fakes come out of Morocco. I have read the sites about how to identify the fakes, and this piece has a couple of "red flags" but if it is a fake it's very well done, and even worth what I paid simply for being a piece of "art." I can see the shiny glued areas on the phacops, and some strange coloration changes. Like I said in posts before, I am a novice, especially with trilobites, and just doing research I thought it was odd these two varieties are on the same matrix and the smaller Gerastos is darker than the Phacops. The matrix is lighter than it probably should be, but I cannot see any bubble marks on it or the specimens which would indicate resin. I've also done the "tooth test" as well as examined the piece under UV light and both seem to indicate it is not a cast. Then again, people are getting much more clever these days with the fakes. The seller said I could have it checked out and return it if I wish within 30 days. Even if it is a fake piece, or that they are real, and the Gerastos was just added to the matrix, I"ll probably keep it. Please let me know what you think. Thanks! Here is more info. Phacops and a Gerastos on the same piece of matrix. Great preservation and preparation. Facets all visible on the Phacops and the Gerastos' head is near perfect. A few chips on the Phacops but nothing major or distracting. The Gerastos has some chips on the center lobe as shown in photos. Phacops is about 5 cm (2 inches) long. Devonian from the Mt. Issoumour area in Morocco. Piece is nicely prepped and needs no stand to display.
  10. Found a nice little spot nearby, I only spent a couple hours and if it's not too hot I'll be heading back tomorrow!
  11. 20170705_082825.jpg

    From the album Canandaigua trilobites

    Several thoraces, two cephalons of Eldregeops Rana from what is probably the Smoke Creek Trilobite Bed of the Windom Shale. This sample comes from a creek on private land on the West shore of Canandaigua Lake in New York State Finger Lakes region
  12. Hello Does these trilobites looks real? It's a ceratarges and a Phacops from Merakib, Morocco. The seller said there are 27 hours of work in this piece. What are your opinions? Thanks for looking
  13. Preparing Phacops PD

    I have by good fortune acquired a few decent Devonian Phacops trilobite specimens from the Penn Dixie Quarry in Hamburg, NY. One particular rock has a few decent Phacops embedded directly in the rock. I wanted to know what the steps are for preparing these fossils, or if I should just send them to a preparer. Please provide any advice you can. Thank you. I have a bunch of fossils and am new to the preparing process.
  14. I have a decent collection of trilobites (Phacops, Elrathia Kingi, Perenopsis) along with a new Eoredlichia that's being shipped directly from China. I also have a large assortment of sharks teeth (Bull, Sand Tiger, Tiger, Snaggletooth) from the Calvert Cliffs Maryland area, a pristine condition Ecphora (Maryland state fossil), a saltwater crocodile tooth, turritella's, quartz horned corals (W New York), porpoise teeth, shark vertebrae, dolphins bones and vertebrae fragments, and numerous other fossils.
  15. Phacops?

    I purchased this trilobite from Colorado, I was told it is a Phacops but from what I read it seems a bit on the large side. Since I was told its from Morocco I questioned its authenticity but due to the damage I think it is real but crudely excavated. Any thoughts on this specimen would be appreciated.
  16. E. rana 9/2016

    I was posting these pictures in a previous thread from my first cephalon that I prepped myself. I started this little guy as a practice piece until I suddenly discovered he had a complete body hiding in the rock. I've been uploading pictures step-by-step as I work on it. Figured I would share them as a separate topic.
  17. First Prepped Trilo-bit

    Have a nice ~2cm wide E. rana cephalon from the Penn Dixie site (~42.778860, ~-78.832180) that I collected earlier this summer. I have been practicing prepping trilo-bits and wanted to share my first "finished" result. There are still a few tiny places where I could've probably gotten a little more of the matrix out, but I went for 'better safe than sorry' given my low-grade equipment. Open to advice and/or suggestions!
  18. I was perusing trilobites on e-bay and came across this gem: the seller makes no bones about the fact that it is a resin cast of a Phacops mortality plate. What is interesting is the level of detail of the cast, including individual lenses on the schizochroal eyes. Most of the websites discussing trilobite fakes indicate that if you see details like terrace lines and individual eye facets, there is a very good chance that it is not a fake (at least those parts of the trilobite). This cast changes those rules, it seems. In the close-up views, you can see bubbles from the setting resin (another tell-tale sign of a resin cast). So, in conclusion...be watchful...the level of detail in resin casts has just gone up a notch. ---Prem
  19. From the album Gifts and boughten!

    An other add to my collection from the Rocks, Gems and fossils expo in Montreal this weekend!
  20. Phacops #2 From Buffalo, New York, USA picture #2

    From the album Gifts and boughten!

    An other add to my collection from the Rocks, Gems and fossils expo in Montreal this weekend!
  21. Phacops #2 From Buffalo, New York, USA picture #1

    From the album Gifts and boughten!

    An other add to my collection from the Rocks, Gems and fossils expo in Montreal this weekend!
  22. Phacops from Bufalo, New york, USA , picture #2

    From the album Gifts and boughten!

    An other add to my collection from the Rocks, Gems and fossils expo in Montreal this weekend!
  23. Phacops from Bufalo, New York, USA

    From the album Gifts and boughten!

    An other add to my collection from the Rocks, Gems and fossils expo in Montreal this weekend!
  24. These are the best of the bugs I found at Penn Dixie. Highly recommend this site, especially for families!
  25. The popular collected trilobite Phacops rana is well embedded in literature for over a hundred years. Then in 1990 it was renamed Eldredgeops rana. A lot of collectors did not understand why the name change and I would like to attempt to clarify why the change. The purpose of this post is to point out the differences I have observed between Phacops and Eldredgeops and explain why "rana" is an Eldredgeops and not a Phacops. The literature on phacopid systematics is in a mild state of disarray. Authors have built on the errors of previous authors. There is no good English diagnostic description of Phacops based on the type species of P. latifrons. This has resulted in different English definitions of Phacops and causing much confusion. I'll first start with a review of what are the types and where they come from. Types: 1. Phacops Emmrich (1839) described the genus Phacops based on the species Calymmene latifrons Bronn, 1825 from the Middle Devonian (Eifelian Junkerberg Formation), Gerolstein, Germany. Because the holotype has been lost, it has not been clear what to base the diagnosis of Phacops on over many years. Then Struve (1982) illustrated topotype material but it was Basse (2006) who designated the neotype of Phacops latifrons. Now there is a definitive specimen to base the description of Phacops on. I have been fortunate to have traded for a topotype cephalon of Phacops latifrons Definition of topotype - a specimen of a species collected at the locality at which the original type was obtained 2. Eldredgeops Stewart (1927) described Phacops rana milleri from the Middle Devonian (Givetian Silica Shale), Sylvania, Ohio. Struve (1990) designated Phacops rana milleri the type species of Eldredgeops. I believe the different subspecies of Phacops rana described by Eldredge (1972) are different species and are assigned to Eldredgeops. I will to refer to these different species Eldredgeops as the "rana group" as a way to simplify the naming of all the different species. Observed different characters: I do not know what are the diagnostic generic features of Phacops or Eldredgeops. All I'm doing is listing some of the differences I have observed between these two trilobites to show they are different genera. Pictures of Phacops latifrons and Eldredgeops milleri are below for comparison with numbers pointing to the different features. Pictures of Eldredgeops rana from New York are also included so one can compare the two species of Eldredgeops and see how they differ. Now for the first time a topotype specimen of Phacops latifrons is compared with a topotype specimen of Eldredgeops milleri. There is no place in the literature where this is done. 1) marginulation - a raised ridge along the ventral margin of the cephalon. It is present in the "rana group" and absent in P. latifrons. It has been used by Flick and Struve (1984) as a diagnostic feature for their tribe Geesopini. Note: The value of this feature for the tribe has been questioned. McKellar and Chatterton (2009) state "This feature has never really been evaluated from a phylogenetic standpoint" 2) The post ocular ridge is prominent in P. latifrons and is absent in the "rana group" 3) The palpebral area is smaller in P. latifrons than in the "rana group" 4) The palpebral lobe is smaller in P. latifrons than in the "rana group" 5) The number of eye files in the "rana group" ranges from 15-18. E. milleri has 18 and E. rana has 17. In P. latifrons the number of eye files is 14-15. The topotype specimen has15 files with a maximum number of 5 lenes. 6) The maximum number of lenes in P. latifrons is between 4-5; E. milleri has 8-9; E. crassituberculata has 6 or less; E. rana 6 Note: Both P. latifrons and E. norwoodensis from the Cedar Vally Formation have the same number of files (15) in the eye. One might determine that this would result in the palpebral lobe being the same size but this does not happen. P. latifrons is smaller than E. norwoodensis. So there is some other factor affecting the size of the palpebral lobe. 7) The subocular pad is present in P. latifrons and absent in the "rana group" 8) The glabella is inflated and its front wall varies from vertical to slightly overhanging the anterior border in the "rana group" and is not as inflated in P. latifrons 9) Lateral preoccipital lobe is round in P. latifrons and is rectangular in Eldredgeops. To summarize the differences: Eldredgeops is marginulated, has an inflated glabella, a rectangular lateral preoccipital lobe, the palpebral area and palpebral lobe and larger than P. latifrons, and does not have a post ocular ridge and subocular pad. Phacops latifrons is not marginulated and the glabella is not inflated, has a post ocular ridge and a subocular pad and a round lateral preoccipital lobe. the palpebral area and palpebral lobe are smaller than Eldredgeops. Other observations: These two genera occur in different time periods. Phacops latifrons is in Middle Devonian Eifelian and Eldredgeops milleri is in the Middle Devonian Givetian It appears all the phacopid of North America disappear at the end of the Eifelian and Eldredgeops migrates from the Old World fauna into North America in the Givetian. Eldredgeops does not evolve from any North American phacopid. Eldredgeops is in the Tribe Geesopini and all the genera of this tribe have not been validated. If these genera are reexamined, it is possible that Eldredgeops could become a junior objective synonym of an another genus in the Tribe Geesopini. Hopefully, now collectors will understand the differences between Phacops and Eldredgeops and why the "rana" group is now referred to as Eldredgeops.
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