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How Much of this Discosauriscus Is Real?
Lucid_Bot posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello! This specimen was described as having minimal restoration. Discosauriscus pulcherrimus Early Permian Limnic Deposits Moravia- 7 replies
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Permian Reptiliomorphs Discosauriscus
Lucid_Bot posted a topic in Is It Real? How to Recognize Fossil Fabrications
Howdy! I'm looking to purchase these plates of Discosauriscus from the Permian of Moravia, Czech Republic. They are from the limnic deposits. There is supposedly no repair or restoration. Thank you.- 5 replies
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From the album: Fossildude's Purchased/Gift Fossils
Aulacopleura konincki, Wenlockian Liten Formation, Lodenice locality, Middle Silurian, Czech Republic.© 2023 Tim Jones
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- aulacopleura konincki
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Lagynocystis pyramidalis was first described and figured by Barrande 1887 under the name Anomalocystites pyramidalis. Taxonomy from Parsley, 2000. Lagynocystis pyramidalis (Barrande) from the marine Lower Ordovician of Bohemia, has features which suggest that it is ancestral, or nearly so, to living cephalochordates such as amphioxus (Branchiostoma). Diagnosis from Parsley 2000, p. 258: "Ankyroid with asymmetrical theca. M‘l—M'5 well developed: MI—M3 shortened and reduced in size: M4 and M5 absent; large CS plate. M‘5 protuberant, hollow. Sutures with M’4 and in some specimens narrowly sutured with M'3 but not flexibly articulated. Superior face with distally overlapping platelets that wrap around onto inferior face near posterior ends. Proximal aulacophore with multiplated meres; styloid with four or five denticulate cups; distal aulacophore atypically long with elongate ossicles and tall rectangular cover plates." Line drawing from Parsley 2000, p. 255: References: Barrande, J. (1887). Classe des Echinodermes. Ordre des cystidées, p. 1–233. In Systême silurien du centre de la Bohême, 7. Rivnác (Prague) and Gerhard (Leipzig). Jefferies R. P. S. (1973). The Ordovician fossil Lagynocystis pyramidalis (Barrande) and the ancestry of amphioxus Phil. Trans. R. Soc. Lond. B265, pp. 409–469. Parsley, R. L. (2000). Morphological and Paleoecolgical Analysis of the Ordovician Ankyroid Lagynocystis (Stylophora: Echinodermata). Journal of Paleontology, 74(2), 254–262.
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- bohemia
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Hello dear fellow forum members, I just acquired this nice specimen of a carpoid, sold as Dendrocystites barrandei from the Czech republic which I have no reason to doubt. My first carpoid, yay! Fascinating group. I wonder about the starfish-like impression to the right of the carpoid though, is that an early "classic" echinoderm? Best regards, J
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- carpoidea
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Originally the fish was described by Agassiz in 1833 under the name Palaeoniscus vratislaviensis. Taxonomy from Štamberg 2021. Diagnosis of Paramblypterus vratislaviensis from Štamberg 2021, p. 77:”. Small fish usually ranging from 100 to 120 mm, exceptionally to 150 mm. The frontal is 3.5 times longer than wide and 2.5 times longer than the length of the parietal. The anterior margin of the frontal is concave medially, interfrontal suture only slightly undulated and without folds, the sculpture on the frontal consists of ridges parallel with the posterior margin of the bone. The dermosphenotic is narrow, elongated anteroposteriorly. The dermopterotic, with lateral process but without posterior process, is narrower anteriorly than posteriorly. The infraorbital superior, dermosphenotic and supraorbital anterior form the dorsal edge of the orbit. The maxilla has a short and high maxillary plate which is convex dorsally, the length/height ratio of the maxillary plate is 1 or less than 1. The operculum is oblong in shape, 1.4 times deeper than it is long. The scales on the anterior part of the body bear fine ridges extending posteriorly to the denticles. Denticulation decreases on the scales in the posterior direction and the last denticulate scale appears in the 13th scale row. A field of small scales occurs along the base of the anal and dorsal fins.” Line drawing from Štamberg 2021, p. 82: Paramblypterus vratislaviensis (Agassiz, 1833). a: restoration of the body in lateral view, scale bar 10 mm. References: Agassiz, L. (1833): Recherches sur les Poissons fossiles. – Aux frais de l’auteur, Neuchâtel, 336 pp. https://doi.org/10.5962/bhl.title.4275 Fritsch, A. (1894): Fauna der Gaskohle und der Kalksteine der Permformation Böhmens. 3(3). – Selbstverlag (in Commission bei Fr. Řivnáč), Prag, pp. 81–104. Štamberg, S. (2021): Actinopterygians of the Broumov Formation (Permian) in the Czech part of the Intra-Sudetic Basin (the Czech Republic). – Fossil Imprint, 77(1): 73–101, Praha. ISSN 2533-4050 (print), ISSN 2533-4069 (on-line).
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- asselian
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Ellipsocephalus hoffi is a common trilobite mainly from central Europe. The slab shows several Ellipsocephalus remnants. Taxonomy according to Fossilworks.org. The systematic position of the family Ellipsocephalidae remains a subject of discussion. Odontogenetic stages of Ellipsocephalus hoffi according to Laibl et al. 2015, p. 5: Identified by oilshale using Laibl et al., 2015. References: SCHLOTHEIM, E.F. (1823): Nachträge zur Petrefactenkunde. Zw. Abteilung, Becker, Gotha, 114 pp. FATKA, O. & SZABAD, M. (2014): Biostratigraphy of Cambrian in the Příbram-Jince Basin (Barrandian area, Czech Republic). Bulletin of Geosciences, 88, 413–429. http://dx.doi.org/10.3140/bull.geosci.1456 LAIBL, L., FATKA, O., BUDIL, P., AHLBERG, P., SZABAD, M., VOKÁČ, V. & KOZÁK, V. (2015): The ontogeny of Ellipsocephalus (Trilobita) and systematic position of Ellipsocephalidae. Alcheringa 39, p. 1-11. DOI: 10.1080/03115518.2015.1034968
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- cambrian
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Does anyone know what amphibian this is? I acquired it as a Letoverpeton moravicum from the Bacov Formation of Moravia, Czech Republic As I understand, Letoverpeton was synonymized with Discosauricus. However, this doesn't look like the typical Discosauricus to me. I am not familiar with amphibians from the Czech Republic, so I would appreciate any help in identifying them, thank you
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- amphibian
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Here is an excellent new paper with a detailed section on post-mortem feeding traces associated with trilobites: Kraft, P., Bruthansová, J., Mikuláš, R. 2020 Feeding Traces Related to Shells from the Prague Basin, Czech Republic (Tremadocian to Early Darriwilian, Ordovician). Palaeogeography, Palaeoclimatology, Palaeoecology, 537(109399):1-21 OPEN ACCESS PDF
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- behavioral patterns
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Taxonomy from Fossilworks.org. Reconstruction from Jefferies 1984, p.293: References: Richard P. S. Jefferies (1984) Locomotion, shape, ornament, and external ontogeny in some mitrate calcichordates, Journal of Vertebrate Paleontology, 4:3, 292-319, DOI: 10.1080/02724634.1984.10012011
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Where in Prague, Czech Republic, can I find/buy fossils?
FossilizedFanatic posted a topic in Questions & Answers
Hello, someone I know is going to Prague soon. He asked me if I knew any spots in/near Prague for hunting for fossils. I didn't know any, and a quick internet search didn't give me any more information. I was wondering if any of the people on here know what it means Thanks in advance!- 4 replies
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From the album: Invertebrates
Mitrocystites mitra BARRANDE, 1887 Ordovizian Sarka Formation Rokycany Czech Republic-
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An interesting web page on fake trilobites. Fake Trilobites, American Museum of Natural History https://www.amnh.org/research/paleontology/collections/fossil-invertebrate-collection/trilobite-website/the-trilobite-files/fake-trilobites Yours, Paul H.
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From the album: Invertebrates
'carpoid’ echinoderm Lagynocystis pyramidalis (BARRANDE, 1887) Ordovician Šárka Formation Rokycany Czech Republic-
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Hello, We are a team of two, me and my 10 year old son. Wherever we go, he is always looking for interesting rocks and fossils. He found a few things last weekend the he would like to identify. Off to the ID section......
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- florida
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Hi all fossil lovers, I am not just an amateur collector but absolute newbie to this field. I just started my new interest and I am glad I found your forum with so much interesting information. You guys have a great forum over here and looks like lots of interesting people. Great work I enjoy traveling, mountaineering, diving and basically anything what involves outdoors. This year I want to go and start fossil hunting, have to wait couple of months because right now we have about a meter of snow over here. Hope luck is on my side and I will have some pics of my own finds to post here soon. Please if my spelling gets doggie take it easy with me after all English is not my first language Thanks
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From the album: Vertebrates
Cyclurus macrocephalus Reuss, 1844 Bowfin Late Eocene Kučlín Czech Republic Length15cm -
From the album: Vertebrates
Paramblypterus sp. Early Permian Boskovice Czech Republic-
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From the album: Trilobites
Hydrocephalus carens (Barrande, 1846) Cambrian Jince Fm Skryje, Czech Republic This was a gift from a fossil comrade who collected there.-
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Hi guys! Yesterday I visited Koneprusy (Devon) in the Czech Republic and found some fossils. It was first time finding fossils But I´m not sure about these two.. I think the first one is crinoid (photo #1). Second one looks like a fossil wood (photos #2-4) to me, but I´ve never found one so it might be just some kind of mineral. I don´t know. Thanks for your help P.S.: Ruller is in centimeters.
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From the album: Trilobites
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- assemblage
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From the album: Invertebrates
Aulacopleura koninckii (Barrande, 1846) Silurian Wenlock Lodenice Liten Formation Motol Member Monograptus flexilis-Zone Czech Republic Hughes, N.C., Hong, P.S., Hou, J.B., & Fusco, G. (2017) The development of the Silurian trilobite Aulacopleura koninckii reconstructed by applying Inferred growth and segmentation dynamics: A case study in Paleo-Evo-Devo. Frontiers in Ecology and Evolution, 5(37):1-12 OPEN ACCESS PDF- 1 comment
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From the album: Trilobites
Cranidium.-
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From the album: MY FOSSIL Collection - Dpaul7
Acantholomina minuta Silurian Trilobite SITE LOCATION: Kopaninské formation, Kosov near Beroun, Czech Republic TIME PERIOD: Silurian (about 420 million years) Data: Odontopleurida is an order of very spinose trilobites closely related to the trilobites of the order Lichida. Some experts group the Odontopleurid families, Odontopleuridae and Damesellidae, within Lichida. Odontopleurids tend to have convex, bar-shaped cephalons, and lobed, knob-shaped glabella that extend to, or almost to the anterior margin. Many, if not almost all odontopleurids have long spines that are derived either from the margins of the exoskeleton, or from granular or tubercular ornamentation, or both. Many odontopleurids are so spinose so as to be described as having "spines on (their) spines." Odontopleurids have 8 to 13 thoracic segments, with Odontopleuridae odontopleurids having no more than 10, and Damesellidae odontopleurids having no more than 13. The pygidium tends to be very small, and invariably has long spines emanating from it in all known genera. Genera of Damesellidae are restricted to Middle to Upper Cambrian marine strata, and may represent a transition between Cambrian-aged lichids, and odontopleurids of Odontopleuridae. The odontopleurids of Odontopleuridae first appear in the Upper Cambrian, and go extinct before the end of the Frasnian epoch of the late Devonian. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Odontopleurida Family: †Odontopleuridae Genus: †Acanthalomina Species: †minuta-
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From the album: MY FOSSIL Collection - Dpaul7
Acantholomina minuta Silurian Trilobite SITE LOCATION: Kopaninské formation, Kosov near Beroun, Czech Republic TIME PERIOD: Silurian (about 420 million years) Data: Odontopleurida is an order of very spinose trilobites closely related to the trilobites of the order Lichida. Some experts group the Odontopleurid families, Odontopleuridae and Damesellidae, within Lichida. Odontopleurids tend to have convex, bar-shaped cephalons, and lobed, knob-shaped glabella that extend to, or almost to the anterior margin. Many, if not almost all odontopleurids have long spines that are derived either from the margins of the exoskeleton, or from granular or tubercular ornamentation, or both. Many odontopleurids are so spinose so as to be described as having "spines on (their) spines." Odontopleurids have 8 to 13 thoracic segments, with Odontopleuridae odontopleurids having no more than 10, and Damesellidae odontopleurids having no more than 13. The pygidium tends to be very small, and invariably has long spines emanating from it in all known genera. Genera of Damesellidae are restricted to Middle to Upper Cambrian marine strata, and may represent a transition between Cambrian-aged lichids, and odontopleurids of Odontopleuridae. The odontopleurids of Odontopleuridae first appear in the Upper Cambrian, and go extinct before the end of the Frasnian epoch of the late Devonian. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Odontopleurida Family: †Odontopleuridae Genus: †Acanthalomina Species: †minuta-
- acantholomina minuta
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