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Hi there. I recently purchased a big box full of shale, containing a number of disarticulated ichthyosaur bones from South Wales. Mostly ribs, but there's also a humerus and one or two other unidentified bones too. It's not an amazing piece, but I'd consider it good practice. I've been trying to work out how to prep it. It's in many pieces, and putting them together is a bit of a task in itself! As you can see from this terrible photo, I've made some progress. I've numbered the joins so that their positions can be found easily, and drawn in marker pen on the surface of the shale where the bones appear to run beneath. I'd appreciate any advice from anyone that's done this sort of thing before. This is how I intend on proceeding: 1. Complete the jigsaw - and hope it all fits together! 2. Prep each piece to expose the bones 3. Set the pieces onto some kind of backing - not sure what? 4. Tidy up the prep, and use epoxy clay to fill the cracks. If anyone has any suggestions, I'd be very grateful. I've never dealt with any icthyosaur material before.

This post will be ongoing as I am still processing my Oxford Clay and started looking at microfossils in it in 2009, I think. Hoping to start photographing finds very soon. See finds already donated to museum in Partners in Palaeontology - Contributions to Science. 1- Agglutinated foram 2 - Also Agglutinated foram according to museum, weird. Would like to find another photo to confirm. I think I need an Jurassic atlas on the things. Santa take note. Yes I will work out how to stack my microscope photos one day.

Hello, I need help to identify this tooth, found by me in a Jurassic formation in Portugal. My first thought it's Pterosaur. I wait for your opinions. The tooth have 1cm. Thanks, Filipe

I recently found this pair of Pleuroceras ammonites when splitting some concretion material I brought back from Buttenheim in Bavaria, Germany which I visited last May. From the Pliensbachian Spinatum Zone, Lower Jurassic. I wish I brought back more of that concretion material since it was so rich in complete ammonites.

Hello everyone! I found many fossils in my last trip to a mountain in Valencia, Spain (as far as I know the strata in that mountain are Jurassic/Cretaceous) but I can't identify these 4 fossils displayed in the pictures below. I would appreciate any help, thanks!.

Hi Is this : 1 and 2 and 3. Fossil wood? 4.Footprint ? 5.Track? 6.Track? 7.Track?

Pyritized

Pyritized

Estimated 160 mya.

Out hunting this morning, opened up a slab of shale and this was inside, looks like a lobsters tail to me but could be anything in this game, found on Yorkshire coast, thanks.

Pyritized

When our Plan A was killed we had to go to Plan B. Plan A was to visit a couple of old mines and sample the mine dumps for pyrite crystals and to try my hand at gold panning some of the tailings a little. This couldn't happen as there was some sort of bike race going up and down the canyon the mines were at the top of. Not wanting to waste the drive over there, we decided to visit the nearby limestone outcrops and viola! Pentacrinus crinoids! More pics

Hi all, I recently found this on a trip to the Jurassic Coast at Dorset and have been intrigued by this find, i'm not an expert on fossil identification and was wondering if there was anything significant about this fossil. it strikes me as being either fossilised wood or an infilled burrow of some kind, however the shine, shape and downward strikes are leaving me somewhat puzzled. i would be grateful for all your potential ideas as to what this could be.

Pyritized

Pyritized

Hi all, Anyone know what species/genus this bivalve steinkern is? It's from Rivière-sur-Tarn, a location in France that yields fossils from the Toarcian stage of the early Jurassic (approx 180 mya). Best regards, Max

Hi all, Anyone know what species/genus this gastropod is? It's from Rivière-sur-Tarn, a location in France that yields fossils from the Toarcian stage of the early Jurassic (approx 180 mya). Best regards, Max

Hi all, Anyone know what species/genus this gastropod is? Never seen anything like this one before... It's from Rivière-sur-Tarn, a location in France that yields fossils from the Toarcian stage of the early Jurassic (approx 180 mya). Best regards, Max

Since getting into fossils something has been bugging me alot about material from the Jurassic and especially material from such places as colorado, utah, etc. Alot of bone material I see online for sale, mostly fragments in various sizes are usually unlabeled and generalized as being from any dinosaur from the Jurrasic. I wonder if there is at least a way to differentiate at least herbivore bone from theropod bone (like allosaurus from camarsaurus)? Is it similar to the method used for cretaceous bone of the honey comb pattern or not? I'm curious why it seems harder to identify Jurassic bone piece, I'd appreciate any input or discussion, thank you. For example would the first two pictures be considered theropod and the last herbivore?

Hi, out hunting yesterday with not much luck then on my retreat I came across this on the footpath back from the beach at Ravenscar North Yorkshire, strange place to find it with it being high up, the path is in a fault line I believe, this doesn't look like anything I've found before, the nodule it is in is like red sandstone ? Any ideas ? Thanks. No idea why photo went upside down ?? Ha

I purchased this bone fragment at a fossil show. It's from the Morrison formation of Utah. I suspect it's theropod, most likely Allosaurus because of its hollow nature but I just wanted to get other opinions on it. Thanks everyone!

These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since August 27, 2017. Phylum Mollusca Class Cephalopoda - Ammonites, Nautiloids and Their Allies. Jurassic Africa/Middle East Bahrouni, N., et al. (2016). Discovery of Jurassic ammonite-bearing series in Jebel Bou Hedma (South-Central Tunisian Atlas): Implications for stratigraphic correlations and paleogeographic reconstruction. Journal of African Earth Sciences, 113. Howarth, M.K. (1992). Tithonian and Berriasian Ammonites from the Chia Gara Formation in Northern Iraq. Palaeontology, Vol.35, Part 3. Kapilima, S. (2003). Bajocian Ammonites from the Msata Hill (Lugoba Formation) in the Hinterland of Dar Es Salaam, Tanzania. Tanz.J.Sci., Vol.29(2). Majidifard, M.R. (2003). Biostratigraphy, Lithostratigraphy, ammonite taxonomy and microfacies analysis of the Middle and Upper Jurassic of northeastern Iran. Ph.D. Dissertation - Der Bayrischen Julius-Maximilians-Universitat Wurzburg. Sayed-Emami, K., et al. (2008). Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran and their palaeobiogeographical and biostratigraphical importance. Acta Palaeontologica Polonica, 53(2). Wilmsen, M., et al. (2002). Early Jurassic (Sinemurian to Toarcian) ammonites from the central High Atlas (Morocco) between Er-Rachidia and Rich. Revue Paleobiol., Geneve, 21(1). Antarctica Challinor, A.B. and D.C.H. Hikuroa (2007). New Middle and Upper Jurassic Belemnite Assemblages from West Antarctica (Latady Group, Ellsworth Land): Taxonomy and Paleobiogeoraphy. Palaeontologia Electronica, Vol.10, Issue 1. Doyle, P. (1991). Teuthid Cephalopods from the Upper Jurassic of Antarctica. Palaeontology, Vol.34, Part 1. Mutterlose, J. (1986). Upper Jurassic Belemnites from the Orville Coast, Western Antarctica, and their Palaeobiogeographical Significance. Antarct.Surv.Bull., Number 70. Asia/Indonesia/Pacific Islands Alberdi, M., D.K. Pandy and F.T. Fursich (2011). Ammonites of the genus Peltoceratoides Spath, 1924 from the Oxfordian of Kachchh, western India. N.Jb.Geol.Palaont.Abh., published on-line. Challinor, A.B. (1989). The Succession of Belemnopsis in the Late Jurassic of Eastern Indonesia. Palaeontology, Vol.32, Part 3. Iba, Y., S.-i. Sano and J. Mutterlose (2014). The Early Evolutionary History of Belemnites: New Data from Japan. PLoS ONE, 9(5). Iba, Y., et al. (2014). Early Jurassic belemnites from the Gondwana margin of the Southern Hemisphere - Sinemurian record from South Tibet. Gondwana Research, xxx. (Article in press) Krishna, J., et al. (1996). Middle Oxfordian Ammonites (Perisphinctinae) from Kachchh (India): Biostratigraphic and Palaeobiological Implications. Revista Espanola de Paleontologia. Special Edition. Matsukawa, M., et al. (2008). A gigantic ammonite from the Upper Jurassic Arimine Formation of the Tetori Group, Japan. Bulletin of the Tateyama Caldera Sabo Museum, Vol.9. Mitta, V.V. and N.V. Besnosov (2007). Jurassic System Cephalopods. In: Palaeontological Atlas of Phanerozoic Faunas and Floras of Uzbekistan. Vol.II. Kim, K.I., et al. (eds.), Republic of Uzbekstan State Committee on Geology and Mineral Resources. Sato, T. and T. Yamada (2014). A new Oxfordian (Late Jurassic) Ammonite Assemblage from the Arimine Area, southeastern Toyama Prefecture, north Central Japan. Bull.Natl.Mus.Nat.Sci. Series C, 40. Sato, T. and T. Yamada (2005). Early Tithonian (Late Jurassic) Ammonite Parapallasiceras newly discovered from the Itoshiro Subgroup (Tetori Group) in the Hida Belt, northern Central Japan. Proc. Japan Acad., Series B, Vol.81, Number 7. Sato, T., et al. (2008). Newly collected Late Jurassic ammonites from Kurisaka, Tokushima Prefecture, Japan. Bull. Toushima Pref.Mus., Number 18. Schairer, G. and A. Zeiss (1992). First record of Callovian ammonites from West Kalimantan (Middle Jurassic, Kalimantan Barat, Borneo, Indonesia). BMR Journal of Australian Geology & Geophysics, 13. Shome, S. and S. Bardhan (2009). The Genus Umiaites Spath, 1931 (Ammonoidea) from the Tithonian (Late Jurassic) of Kutch, Western India. Palaeontologia Electronica, Vol.12, Issue 1. Stevens, G.R. (1965). A New Belemnite from the Upper Jurassic of Indonesia. Palaeontology, Vol.7, Part 4. Westermann, G.E.G. and W. Yi-Gang (1988). Middle Jurassic Ammonites of Tibet and the Age of the Lower Spiti Shales. Palaeontology, Vol.31, Part 2. Yin, J. (2016). Bathonian-Callovian (Middle Jurassic) ammonites from northwestern Qiangtang Block, Tibet, and the revised age of the Suowa Formation. Proceedings of the Geologists' Association, xxx. (Article in Press) Austalia/New Zealand **No Information Available** Europe (incuding Greenland and Siberia) Arkell, W.J. and J.H. Callomon (1963). Lower Kimeridgian Ammonites from the Drift of Lincolnshire. Palaeontology, Vol.6, part 2. Bardin, J., I. Rouget and F. Cecca (2013). Late Pliensbachian (Early Jurassic) ammonites from Lac de Charmes (Haute-Marne, France): Systematic, biostratigraphy and palaeobiogeography. Geodiversitas, 35(2). Callomon, J.H. (1994). Jurassic ammonite biochronology of Greenland and the Arctic. Bulletin of the Geological Society of Denmark, Vol.41. Callomon, J.H. and J.K. Wright (1989). Cardioceratid and Kosmoceratid Ammonites from the Callovian of Yorkshire. Palaeontology, Vol.32. Part 4. Dera, G., A. Toumoulin and K. de Baets (2016). Diversity and morphological evolution of Jurassic belemnites from South Germany. Palaeogeography, Palaeoclimatology, Palaeoecology, 457. Dietze, V. and R.B. Chandler (2008). Parsemileites n.gen., a new genus of the ammonite family Otoitidae Mascke from the Lower Bajocian (Middle Jurassic) of Southern England with new information on the Otoitidae from Southern England. Palaeodiversity, 1. Dietze, V., C. Mangold and R.B. Chandler (2002). Two new species of Berbericeras Roman, 1933 (Morphoceratidae, Ammonitina) from the Zigzag Bed (Lower Bathonian, Zigzag Zone) of Waddon Hill (Broadwindsor, Dorset, Southern England). Stuttgarter Beitr.Naturk., Ser.B, Number 324. Dietze, V., et al. (2014). Aalenian (Middle Jurassic) ammonites and biostratigraphy of the Geisingen clay pit (SW Germany). Palaeodiversity, 7. Dietze, V., et al. (2005). The ammonite fauna and biostratigraphy of the Lower Bajocian (Ovale and Laeviuscula zones) of E Swabia (S Germany). Stuttgarter Beitr.Naturk., Ser.B, Number 353. Dietze, V., et al. (2001). New Stephanoceratids (Ammonitina) from the Lower Bajocian of Bruton (Somerset, S England) and Achdorf (Wutach area, SW Germany). Stuttgarter Beitr.Naturk., Ser.B, Number 312. Doguzhaeva, L.A. (2000). A rare coleoid mollusc from the Upper Jurassic of Central Russia. Acta Palaeontologica Polonica, 45,4. Dommergues, J.-L., C. Meister and R.B. Rocha (2010). The Sinemurian ammonites of the Lusitania Basin (Portugal): an example of complex endemic evolution. Palaeodiversity, 3. Donovan, D.T. (1998). A New Ammonite Genus from the Lower Jurassic (Upper Sinemurian) of Dorset, England. Palaeontology, Vol.41, Part 5. Donovan, D.T. and F. Surlyk (2003). Lower Jurassic (Pliensbachian) ammonites from Bornholm, Baltic Sea, Denmark. Geological Survey of Denmark and Greenland, Bulletin 1. Donovan, D.T., L.A. Doguzhaeva and H. Mutvei (2003). Two Pairs of Fins in the Jurassic Coleoid Trachyteuthis from Southern Germany. Berliner Paläobiol.Abh., 03. In: Coleoid cephalopods through time. Warnke, K., H. Keupp and S.v. Boletzky (eds.) Doyle, P. (1990). Teuthid Cephalopods from the Lower Jurassic of Yorkshire. Palaeontology, Vol.33, Part 1. Doyle, P. (1985). Sexual Dimorphism in the Belemnite Youngibelus from the Lower Jurassic of Yorkshire. Palaeontology, Vol.28, Part 1. Edmunds, M., et al. (2016). A systematic account of the ammonite faunas of the Obtusum Zone (Sinemurian Stage, Lower Jurassic) from Marston Magna, Somerset, UK. Proceedings of the Geologists' Association, xxx. (Article in Press) Fernandez-Lopez, S.R. (2001). Upper Bathonian ammonites of the Catalan Basin (Tivissa and Cap Salou, Spain). Hantkeniana, 3. Frau, C., et al. (2016). Systematic palaeontology of the Perisphinctoidea in the Jurassic/Cretaceous boundary interval at Le Chouet (Drome, France), and its implications for biostratigraphy. Acta Geologica Polonica, Vol.66, Number 2. Fuchs, D. (2014). First evidence of Mastigophora (Cephalopoda: Coleoidea) from the early Callovian of La-Voulte-sur-Rhone (France). Gottingen Contributions to Geosciences, 77. Fuchs, D., H. Keupp and G. Schweigert (2013). First record of a complete arm crown of the Early Jurassic coleoid Loligosepia (Cephalopoda). Palaontol.Z. Fuchs, D., T. Engeser, and H. Keupp (2007). Gladius shape variation in coleoid cephalopod Trachyteuthis from the Upper Jurassic Nusplingen and Solnhofen Plattenkalks. Acta Palaeontologica Polonica, 52(3). Fuchs, D., A. Klinghammer and H. Keupp (2007). Taxonomy, morphology and phylogeny of plesioteuthedid coleoids from the Upper Jurassic (Tithonian) Plattenkalks of Solnhofen. N.Jb.Geol.Palaont. Abh., 245/2. Garassino, A. and D.T. Donovan (2000). A New Family of Coleoids from the Lower Jurassic of Osteno, Northern Italy. Palaeontology, Vol.43, Part 6. Hammer, O, et al. (2013). Large onychites (cephalopod hooks) from the Upper Jurassic of the Boreal Realm. Acta Palaeontologica Polonica, 58(4). Haug, J.T., I. Kruta and C. Haug (2012). A possible fossil paralarva (Cephalopoda: Coleoidea) from the Solnhofen Lithographic Limestones (Upper Jurassic, southern Germany). Palaeontologia Electronica, Vol.15, Issue 3. Howarth, M.K. and J. Stephanov (1965). The Genus Kosmoceras in Bulgaria. Bulgarian Academy of Sciences, Vol.VII. Keupp, H. and V. Mitta (2013). Cephalopod jaws from the Middle Jurassic of central Russia. N.Jb.Geol.Palaont.Abh., 270/1. Keupp, H. and G. Schweigert (2008). Juraphyllites mimatensis (d'Orbigny, 1845)(Ammonoidea: Phylloceratida), a Tethyan immigrant in the Upper Pliensbachian of Franconia (Jurassic, Southern Germany). Palaeodiversity, 1. King, A. (2010). Fossil Nautiloids from the Upper Lias (Toarcian) 'Junction Bed' of the Ilminster Area, Somerset. Somerset Archaeology and Natural History. Klompmaker, A.A. and B.J.H.M. van den Berkmortel (2007). Earliest Jurassic (Hettangian) psiloceratoid ammonites from a subrosion pipe at Winterswijk, the eastern Netherlands. Netherlands Journal of Geosciences, 86-4. Klug, C., G. Schweigert and G. Dietl (2010). A new Plesioteuthis with beak from the Kimmeridgian of Nusplingen (Germany). Ferrantia, 59. Klug, C., et al. (2009). First record of a belemnite preserved with beaks, arms and ink sac from the Nusplingen Lithographic Limestone (Kimmeridgian, SW Germany). Lethaia. Klug, C., et al. (2005). Coleoid beaks from the Nusplingen Lithographic Limestone (Upper Kimmeridgian, SW Germany). Lethaia, Vol.38. Kopic, J. and A. Wierzbowski (1988). Ammonites and Stratigraphy of the Bathonian and Callovian at Janusfjellet and Wimanfjellet, Sassenfjorden, Spitsbergen. Acta Palaeontologica Polonica, 33(2). Kruta, I., et al. (2016). Proteroctopus ribeti in Coleoid Evolution. Palaeontology - Rapid Communications, Vol.59, Part 6. Kulicki, C. and H. Szaniawski (1972). Cephalopod Arm Hooks from the Jurassic of Poland. Acta Palaeontologica Polonica, Vol.XVII, Number 3. Manley, E.C. (1977). Unusual Pattern Preservation in a Liassic Ammonite from Dorset. Palaeontology, Vol.20, Part 4. Mariotti, N., M. Santantonio and R. Weis (2007). Aalenian - Early Bajocian Belemnite Assemblage from Peri-Mediterranean Tethyan Sediments (Calabria, Southern Italy). Geologica Romana, 40. Martill, D.M. (1990). Predation on Kosmoceras by Semionotid Fish in the Middle Jurassic Lower Oxford Clay of England. Palaeontology, Vol.33, Part 3. Meister, C., J.-L. Dommergues and R.B. Rocha (2012). Ammonites from the Apoderoceras beds (Early Pliensbachian) in São Pedro de Muel (Lusitanian Basin, Portugal). Bulletin of Geosciences, 87(3). Mironenko, A.A. (2016). A new type of shell malformation caused by epizoans in Late Jurassic ammonites from Central Russia. Acta Palaeontologica Polonica, 61(3). Mironenko, A.A. (2015). The soft-tissue attachment scars in Late Jurassic ammonites from Central Russia. Acta Palaeontologica Polonica, 60(4). Mironenko, A.A. (2015). Soft-tissue preservation in the Middle Jurassic ammonite Cadoceras from Central Russia. Swiss J.Palaeontol., Vol.132, Number 4. Moliner, L. and F. Oloriz (2010). New Lower Kimmeridgian ataxioceratin ammonite from the Eastern Iberian Chain, Spain: Systematic, biogeographic, and biostratigraphic relevance. Acta Palaeonotologica Polonica, 55(1). Morton, N. (1983). Pathologically Deformed Graphoceras (Ammonitina) from the Jurassic of Skye, Scotland. Palaeontology, Vol.26, Part 2. Morton, N. (1975). Bajocian Sonniniidae and Other Ammonites from Western Scotland. Palaeontology, Vol.18, Part 1. Morton, N. (1973). The Aptychi of Sonninia (Ammonitina) from the Bajocian of Scotland. Palaeontology, Vol.16, Part 1. Morton, N. (1971). Some Bajocian Ammonites from Western Scotland. Palaeontology, Vol.14, Part 2. Myczynski, R. (2004). Toarcian, Aalenian and Early Bajocian (Jurassic) ammonite faunas and biostratigraphy in the Pieniny Klippen Belt and the Tatra Mts., West Carpathians. Studia Geologica Polonica, Vol.123. Nicosia, U. (1986). Ammonites/Epizoans Relationships in the Kimmeridgian of the Central Apenines. Geologica Rom., 25. O'Dogherty, L., et al. (2006). Carbon-isotope stratigraphy and ammonite faunal turnover for the Middle Jurassic in the Southern Iberian palaeomargin. Palaeogeography, Palaeoclimatology, Palaeoecology, 239. Oloriz, F. and F.J. Rodriguez-Tovar (1996). The Ammonite Sutneria from the Upper Jurassic of Southern Spain. Palaeontology, Vol.39, Part 4. Palframan, D.F.B. (1967). Variation and Ontogeny of Some Oxford Clay Ammonites: Distichoceras bicostatum (Stahl) and Horioceras baugieri (D'Orbigny), from England. Palaeontology, Vol.10, Part 1. Parent, H., A. Scherzinger and G. Schweigert (2008). Sexual phenomena in Late Jurassic Aspidoceratidae (Ammonoidea). Dimorphic correspondence between Physodoceras hermanni (Berkhemer) and Sutneria subeumela Schneid, and first record of possible hermaphroditism. Palaeodiversity, 1. Parsons, C.F. (1975). Ammonites from the Doulting Conglomerate Bed (Upper Bajocian, Jurassic) of Somerset. Palaeontology, Vol.18, Part 1. Prikryl, T., et al. (2012). Evidence for fish predation on a coleoid cephalopod from the Lower Jurassic Posidonia Shale of Germany. N.Jb.Geol.Palaont.Abh., 263/1. Pugaczewska, H. (1961). Belemnoids from the Jurassic of Poland. Acta Palaeontologica Polonica, Vol.VI, Number 2. Reitner, J. (2009). Preserved gill remains in Phragmoteuthis conocauda (Quenstedt, 1846-49)(Toarcian, Southern Western Germany). Berliner palaobiologische Abhandlungen, 10. Rogov, M.A. and A.A. Mironenko (2015). Patterns of the evolution of aptychi of Middle Jurassic to Early Cretaceous Boreal ammonites. Swiss J.Paleontol. Rogov, M.A., V.S. Mileev and S.B. Rosanov Lower Callovian of East Crimea: New Data on the Ammonite Fauna and Biostratigraphy. Geologica Carpathica. Sandoval, J. (2016). Ammonite assemblages and chronostratigraphy of the uppermost Bajocian-Callovian (Middle Jurassic) of the Murcia Region (Betic Cordillera, south-eastern Spain). Proceedings of the Geologists' Association, xxx. (Article in Press) Schlogl, J., et al. (2009). Early and Middle Callovian ammonites from the Pieniny Klippen Belt (Western Carpathians) in hiatal successions: unique biostratigraphic evidence from sediment-filled fissure deposits. N.Jb.Geol.Palaont.Abh., Vol.252/1. Schweigert, G. (2005). The occurrence of the Tethyan ammonite genus Meneghiniceras (Phylloceratina: Juraphyllitidae) in the Upper Pliensbachian of SW Germany. Stuttgarter Beitr.Naturk., Ser.B, Number 356. Tomas, R. and J. Palfy (2007). Revision of Early Jurassic ammonoid types from the Persani Mts. (East Carpathians, Romania). N.Jb.Geol.Palaont. Abh., Vol.234/2. Vasicek, Z. and P. Skupien (2014). Recent Discoveries of Tithonian Ammonites in the Stramberk Limestone (Koutac Quarry, Outer Western Carpathians). Annales Societatis Geologorum Poloniae, Vol.84. Weis, R. and N. Mariotti (2007). A belemnite fauna from the Aalenian-Bajocian boundary beds of the Grand Duchy of Luxembourg (NE Paris Basin). Bollettino della Societa Paleontologica Italiana, 46(2-3). Weis, R., N. Mariotti and W. Riegraf (2012). The belemnite family Holcobelidae (Coleoidea) in the European Jurassic: systematics, biostratigraphy, palaeobiogeography and evolutionary trends. Palaeodiversity, 5. Wierzbowski, A. (1989). Ammonites and Stratigraphy of the Kimmeridgian at Wimanfjellet, Sassenfjorden, Spitsbergen. Acta Palaeontologica Polonica, 34(4). Wierzbowski, H. and M.M. Joachimski (2009). Stable Isotopes, Elemental Distribution, and Growth Rings of Belemnopsid Belemnite Rostra: Proxies for Belemnite Life Habitat. Palaios, Vol.24. Wright, J.K. (1996). Perisphinctid Ammonites of the Upper Calcareous Grit (Upper Oxfordian) of North Yorkshire. Palaeontology, Vol.39, Part 2. Zeiss, A., A. Benetti and N. Pezzoni (1994). A new ammonite fauna from the Tithonian (Semiformiceras/Verruciferum Zone) of the Lessinian Alps, Verona Province, Northern Italy. Palaeopelagos Special Publication I. North America Frebold, H. (1961). The Jurassic Faunas of the Canadian Arctic - Middle and Upper Jurassic Ammonites. Geological Survey of Canada, Bulletin 74. Imlay, R.W. (1982). Late Bajocian Ammonites from Southern Alaska. United States Geological Survey, Professional Paper 1189. Imlay, R.W. (1981). Early Jurassic Ammonites from Alaska. United States Geological Survey, Professional Paper 1148. Imlay, R.W. (1981). Jurassic (Bathonian and Callovian) Ammonites in Eastern Oregon and Western Idaho. United States Geological Survey, Professional Paper 1142. Imlay, R.W. (1975). Stratigraphic Distribution and Zonation of Jurassic (Callovian) Ammonites in Southern Alaska. United States Geological Survey, Professional Paper 836. Imlay, R.W. (1962). Late Bajocian Ammonites from the Cook Inlet Region, Alaska. United States Geological Survey, Professional Paper 418-A. Imlay, R.W. (1961). Late Jurassic Ammonites from the Western Sierra Nevada, California. United States Geological Survey, Professional Paper 374-D. Imlay, R.W. (1953). Callovian (Jurassic) Ammonites from the United States and Alaska. Part 2. Alaska Peninsula and Cook Inlet Regions. United States Geological Survey, Professional Paper 249-B. Imlay, R.W. (1953). Callovian (Jurassic) Ammonites from the United States and Alaska. Part 1. Western Interior United States. Unites States Geological Survey, Professional Paper 249-A. Imlay, R.W. and D.L. Jones (1970). Ammonites from the Buchia Zones in Northwestern California and Southwestern Oregon. United States Geological Survey, Professional Paper 647-B. Jakobs, G.K. (1992). Toarcian (Lower Jurassic) Ammonite Biostratigraphy and Ammonite Fauna of North America. Ph.D. Thesis - The University of British Columbia. (697 pages) Jakobs, G.K. and P.L. Smith (1996). Latest Toarcian Ammonoids from the North American Cordillera. Palaeontology, Vol.39, Part 1. Longridge, L.M., et al. (2008). Middle and late Hettangian (Early Jurassic) ammonites from the Queen Charlotte Islands, British Columbia, Canada. Revue de Paleobiologie, Geneve, 27(1). Reeside, J.B. (1919). Some American Jurassic Ammonites of the Genera Quenstedticeras, Cardioceras and Amoeboceras, Family Cardioceratidae. United States Geological Survey Professional Paper 118. Rogov, M.A. and T.P. Poulton (2015). Aulacostephanid ammonites from the Kimmeridgian (Upper Jurassic) of British Columbia (western Canada) and their significance for correlation and palaeobiogeography. Bulletin of Geosciences, 90(1). Smith, P.L., et al. (1988). An ammonite association for the Lower Jurassic of Canada and the United States: the Pliensbachian. Can.J. Earth Sci., 25. South America/Central America/Caribbean Blau, J., et al. (2008). A new fossiliferous site of Lower Liassic (Upper Sinemurian) marine sediments from the southern Sierra Madre Oriental (Puebla, Mexico): ammonite fauna, biostratigraphy and description of Ectocentrites hillebrandti new species. Revista Mexicana de Ciencias Geologicas, Vol.25, Number 3. Dietze, V., et al. (2012). Ammonites and stratigraphy of a Lower Bajocian (Middle Jurassic) section in Sierra Chacaico (Neuquen Basin, Argentina). Zitteliana A, 52. Enay, R., et al. (1996). Upper Tithonian Ammonites and Floras from Chicama Basin, Northern Peruvian Andes. GeoResearch Forum, Vols. 1-2. Fernandez-Lopez, S.R. and G.B. Chong-Diaz (2014). Strigoceras septicarinatum (Jurassic Ammonoidea) in the Precordillera of North Chile: Paleobiogeographical and paleoenvironmental implications. 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Oxford Clay Ichthyosaur paddle digit , Peterborough Formation, UK. Rugosities indicating the presence of cartilage

Found 21st Aug 2017 on Kimmeridge beach Dorset UK so late jurassic era. The centre line is slightly raised, the edges clean cut.

I went yestesday on the jurassic cliffs near Boulogne sur mer,Portlandian site Ripple marks