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References: Alessandro Garassino & Günter Schweigert (2006) The Upper Jurassic Solnhofen decapod crustacean fauna: review of the types from old descriptions. Part I. Infraorders Astacidea, Thalassinidea, and Palinura". Memorie della Società Italiana di Scienze Naturali e del Museo Civico di Storia Naturale di Milano 34. Schlotheim E.F. von (1822) Nachträge zur Petrefactenkunde, 1. Gotha: Becker
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- lithographic limestone
- palaeastacus
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Taxonomy according to Pazinato et al., 2020. Restoration from Pazinato et al., 2020, p. 10: Identified by oilshale. References: Charbonnier S. & Garassino A. 2012. — The marine arthropods from the Solnhofen Lithographic Limestones (Late Jurassic, Germany) in the collections of the Muséum national d’Histoire naturelle, Paris. Geodiversitas 34 (4): 857-871. http://dx.doi.org/10.5252/g2012n4a8 Pazinato, P. G., Jauvion, C., Schweigert, G., Haug, J. T., & Haug, C. 2020: After 100 years: a detailed view of an eumalacostracan crustacean from the Upper Jurassic Solnhofen Lagerstätte with raptorial appendages unique to Euarthropoda. Lethaia, https://doi.org/10.1111/let.12382.
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Trip to the Upper Jurassic of Solnhofen (Germany), visit to the Museum
Juan A. Poblador posted a topic in Fossil Hunting Trips
Hi all ! A little more than a year ago, I had the opportunity to finally travel to Solnhofen (Germany). Thanks to my brother, who works in Germany, and gave me the opportunity to dedicate a small part of the Christmas holidays to enjoy the magnificent Upper Jurassic of Solnhofen. I have to admit, all types of the "konservat lagerstätte" have always made me fall in love. I am always fascinated with some exceptional preservation! For many years, I had been waiting for the opportunity to meet, FINALLY! to the Sciurumimus and Archaeopteryx Now, I can sleep much calmer, now that I have looked at them face-to-face! Apart from these two jewels, I was able to enjoy the magnificent collection that they possess in the Museum of Solnhofen. Which I recommend visiting ("Förderverein Bürgermeister Müller Museum Solnhofen") I remember that day, the German cold was tremendous! Still I tried to visit the outcrops, and below 20 cm of snow, I enjoyed opening some frozen lithographic limestones. Although without much success more than a mold of ammonites and half pneumonia! How cold it was! But it was a Great Trip !. Here I share it with you!- 8 replies
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A juvenile. Adults can get up to 20cm. References: Arratia, GF, "Anaethalion and similar teleosts (Actinopterygii, Pisces) from the Late Jurassic (Tithonian) of southern Germany and their relationships", Palaeontographica Abteilung A Palaeozoologie-Stratigraphie, vol. 200, issue 1-3, pp. 1–44
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Saccocoma tenella is the most common macrofossil of the Solnhofen Limestone. Taxonomy from Hess & Etter 2011. Reconstruction from Milson 1994, p. 123: References; Milsom, C. (1994) Saccocoma: a benthic crinoid from the Jurassic Solnhofen Limestone, Germany. Palaeontology, 37, 1, 121–129. H. Hess & W. Etter (2011): Life and death of Saccocoma tenella (GOLDFUSS). Swiss Journal of Geosciences 104(S1) · December 2011
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From the album: Vertebrates
Anaethalion angustus MÜNSTER, 1832 Late Jurassic Tithonian Solnhofen Germany Length: 4cm-
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From the album: Invertebrates
Saccocoma tenella GOLDFUSS, 1831 Upper Jurassic Tithonian Solnhofen Germany A floating crinoid -
Crustaceans are a large, diverse group of anthropods which includes the crabs, prawns, lobsters, barnacles and other shelled animals. Perhaps owing to their hard shells and marine lifestyles, crustaceans have a rich and extensive fossil record, extending up to the Cambrian, though they do not appear in abundance until the Carboniferous. They make for attractive and familiar fossils, and are one of my favorite groups to collect. Allow me to present my humble collection. Eryon cuvieri 155 million years old | late Jurassic Solnhofen Limestones; "Plattenkalk” Malm Zeta 2, Eichstatt, Germany Galene bispinosa 5 - 1 million years old | Pliocene to Pleistocene Sangiran, Central Java Carpopenaeus longistrosis 95.5 - 93 million years old | late Cretaceous Haquel, Lebanon Weichangiops rotundus (Triops) 145 - 125 million years old | early Cretaceous Dabeigou Fm; Hebei province, China
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From the album: Vertebrates
Macromesodon gibbosus (WAGNER, 1851) Solnhofen Formation Tithonian Late Jurassic Birkhof District of Eichstätt Germany Length 5cm / 2" The former name Eomesodon is not valid anymore -
The names Pterocoma or Antedon doesn't seem to be valid anymore. References: G. Dietl and G. Schweigert (2011). Im Reich der Meerengel. Der Nusplinger Plattenkalk und seine Fossilien. [W. Kiessling/M. Krause/M. Krause]
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- comaturella
- feather star
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Taxonomy from Maxwell et al. 2020. Identified by oilshale. References: Agassiz L. (1843) Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel xxxii-188. Maxwell, E.E., Lambers, P.H., López-Arbarello, A., and Schweigert G. (2020) Re-evaluation of pachycormid fishes from the Late Jurassic of Southwestern Germany. Acta Palaeontologica Polonica 65 (3): 429–453.
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References: C. Haug, D. E. G. Briggs, D. G. Mikulic, J. Kluessendorf, and J. T. Haug (2014). The implications of a Silurian and other thylacocephalan crustaceans for the functional morphology and systematic affinities of the group. BMC Evolutionary Biology 14(159):1-15 [M. Clapham/M. Clapham] H. Polz (1989). Clausocaris nom. nov. pro Clausia Oppenheim 1888. Archaeopteryx 7:73 H. Polz (1993). Zur Metamerie von Clausocaris lithographica (Thylacocephala, ?Crustacea). Archaeopteryx. 11: 105-112. H. Polz (1992). Zur Lebensweise der Thylacocephala. Archaeopteryx. 10: 1-12.
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From the album: Vertebrates
Palaeocarcharias stromeri BEAUMONT, 1960 Upper Jurassic Lithographic Limestone Solnhofen Formation Tithonian Schernfeld Germany juvenile- 10 comments
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Amblysemius was clearly a predator as evidenced by its mouth full of sharp teeth. It was a notable fast swimmer. Together with its only sister genus Caturus, Amblysemius was a member of the extinct Halecomorpha family Caturidae. It appears that the halecomorph Liodesmus, known from Solnhofen only, is related to the Caturids, rather than the amiiforms, as has been usually surmised. Once a diverse major group of bony fishes, the Halecomorpha have only one surviving member, the bowfin (Amia calva) of eastern North America. Living bowfins are remarkably hardy since they have a swim bladder that opens into their esophagus so they can gulp air, and hence survive in water with low oxygen. Amblysemius was a primitive species of fish that thrived during the Jurassic Period but went extinct by the Lower Cretaceous Period. Amblysemius possessed ganoid scales that are more cycloid in nature and as a member of the holosteans a bony skeleton with a partially ossified vertebral column. The Caturidae are represented in the Solnhofen Formation by at least four species: Caturus furcatus Agassiz 1834 and Caturus giganteus Wagner, 1851. Caturus pachyurus Agassiz, 1833 and Caturus bellicianus Thiollière 1852 from Solnhofen, Germany and Cerin, France were transferred to the revived sister genus Amblysemius (now Amblysemius pachyurus and Amblysemius bellicianus). Compared to Caturus, Amblysemius is characterized by its more slender body outline, the bigger and more deeply forked caudal fin being heterocerc with the upper lobe clearly longer than the lower one and the strong dentition. Amblysemius has considerably smaller scales compared to Caturus. Maximum length is around 50cm; this specimen has only 30cm or 12". References: Paul Lambers (1994) The halecomorph fishes Caturus and Amblysemius in the lithographic limestone of Solnhofen (Tithonian), Bavaria. Geobios 27:91-99
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References: Muenster, G. (1839): Decapoda Macroura. Abbildung und Beschreibung der fossilen langschwänzigen Krebse in den Kalkschiefern von Bayern. – Beiträge zur Petrefactenkunde, 2: 1–88. Günter Schweigert & Alessandro Garassino (2004). "New genera and species of shrimps (Crustacea: Decapoda: Dendrobranchiata, Caridea) from the Upper Jurassic lithographic limestones of S Germany". Stuttgarter Beiträge zur Naturkunde Serie B 350: 33. C. E. Schweitzer, R. M. Feldmann, A. Garassino, H. Karasawa, and G. Schweigert. 2010. Systematic list of fossil decapod crustacean species. Crustaceana Monographs 10:1-222
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The Caturidae are represented in the Solnhofen Formation by at least four species: Caturus furcatus Agassiz 1834, Caturus giganteus Wagner, 1851, Caturus pachyurus Agassiz, 1833 (all from Solnhofen) and Caturus bellicianus Thiollière 1852 from Solnhofen, Germany and Cerin, France. The last two species were transferred to the revived sister genus Amblysemius (now Amblysemius pachyurus and Amblysemius bellicianus). C. furcatus was clearly a predator as evidenced by its mouth full of sharp teeth. It was a notable fast swimmer possessing an elongated, somewhat thickset body with slender head. Together with its only sister genus Amblysemius, Caturus was a member of the extinct Halecomorpha family Caturidae. It appears that the halecomorph Liodesmus, known from Solnhofen only, is related to the Caturids, rather than the Amiiforms, as has been usually surmised. Caturus possessed ganoid scales that are more cycloid in nature and as a member of the holosteans a bony skeleton with a partially ossified vertebral column. The head is short an equipped with powerfully toothed jaws. The dorsal fin is pointed and attached just posterior to the body's midpoint. anal fin is attached somewhat more to the rear. The caudal fin is large and deeply divided. Juvenile species.
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References: Vannier, J., Chen, J.−Y., Huang, D.−Y., Charbonnier, S., and Wang, X.−Q. (2006). The Early Cambrian origin of thylacocephalan arthropods. Acta Palaeontologica Polonica 51 (2): 201–214. Vannier, J. et al. (2016) Exceptional preservation of eye structure in arthropod visual predators from the Middle Jurassic. Nat. Commun. 7:10320 doi: 10.1038/ncomms10320.
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- dollocaris
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Acanthoteuthis speciosa Wagner in Muenster, 1839
oilshale posted a fossil in Coleoids (Belemnites, Squid)
Acanthoteuthis is now considered as a member of the Belemnotheutida, a suborder of the Belemnitida. The ink sack suggests that this species lived not deeper than 200m. References: Dirk Fuchs, Sigurd von Boletzky and Helmut Tischlinger (2010): New evidence of functional suckers in belemnoid coleoids (Cephalopoda) weakens support for the 'Neocoleoidea' concept. Journal of Molluscan Studies 76(4):404-406 · October 2010-
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Several Late Jurassic macrosemiids are known from the Solnhofen limestones, including at least Notagogus, Histionotus, Voelklichthys and two species of Propterus: P. elongatus and P. microstomus. Taxonomy from Fossilworks.org. Diagnosis from Bartram 1977, p.179: "Propterus reaching standard length of 150 mm, although most specimens are about half this size; mean proportions as percentage of standard length: head length 33 %, trunk depth 38 %, predorsal length 40 %, prepelvic length 60 %, preanal length 84%; fin-ray counts: D(ant.) 10-13, D(post.) 10-14, P 17, V 6, A 5, C 15; about 36 lateral line scales; scales thin; two lobes of dorsal fin separated by a gap; anterior dorsal fin outline concave; no fulcra on posterior dorsal fin; cauda] fin-ravs bifurcating a maximum of twice." Line drawing from Bartram 1977, p. 181: Identified by oilshale using Bartram 1977. References: Bartram, A.W.H. (1977) The Macrosemiidae, a Mesozoic family of Holostean fishes. Bulletin of the British Museum of Natural History (Geology), 29, 137-234. Gloria Arratia and Hans-Peter Schultze (2012): The macrosemiiform fish companion of the Late Jurassic theropod Juravenator from Schamhaupten, Bavaria, Germany. Fossil Record 15 (1) 2012, 5–25 / DOI 10.1002/mmng.201200001
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From the album: Vertebrates
Notagogus denticulatus Agassiz 1843 Late Jurassic Tithonian Schamhaupten District Eichstätt Bavaria Germany A baby of this rare species - length 2,5cm / 1"-
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Sea urchins are rare members of the Solnhofen biota.
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Field collection
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What are some of the neatest "slice of life" fossils?
aplomado posted a topic in General Fossil Discussion
What are some of the neatest "slice of life" fossils? That is, showing interactions of creatures with each other and the environment. Please post pictures of ones you like This is one I really like: Apparently a pterosaur grabbed a small fish out of the water, but was grabbed by a larger Aspidorhynchus fish; entangled together, they both died and were fossilized, along with the little fish in the pterosaur's throat! https://www.newscientist.com/article/dn26984-stunning-fossils-fish-catches-fish-catching-pterosaur/- 10 replies
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The horseshoe crab Mesolimulus walchi is reasonably common within the Solnhofen limestones. Ventral preservation. Lit.: Stunning Discovery: World’s Longest Fossilized ‘Death Track’
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