{"id":32005,"date":"2025-07-23T18:37:28","date_gmt":"2025-07-23T21:37:28","guid":{"rendered":"http:\/\/gabrielpaladino.com\/?p=32005"},"modified":"2025-09-15T12:08:40","modified_gmt":"2025-09-15T15:08:40","slug":"ataxioceras-discobolum","status":"publish","type":"post","link":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/2025\/07\/23\/ataxioceras-discobolum\/","title":{"rendered":"Ataxioceras discobolum"},"content":{"rendered":"
Ataxioceras discobolum<\/b> is a species of ammonite from the Late Jurassic, specifically the Unter\u2011Kimmeridgian (approximately 155\u2013153\u202fMa). It is found in the marine sediments of the Kulmbach\u2013Kirchleus area, in the Franconian Alb (Bavaria, Germany), a classic locality for Kimmeridgian studies in Europe.<\/p>\n

The shell of this ammonite is moderately evolute and displays dense, sharply defined ribbing. The primary ribs (around 32\u201336 per whorl, typical for the genus) originate at the umbilical shoulder and bifurcate midway across the flank. Tertiary and even quaternary bifurcations are frequently observed, a distinctive trait of Ataxioceras. The umbilicus occupies about 40% of the shell diameter, consistent with the characteristic morphology of the genus.<\/p>\n

Scientific classification:<\/b>
\nKingdom: Animalia
\nPhylum: Mollusca
\nClass: Cephalopoda
\nSubclass: Ammonoidea
\nOrder: Ammonitida
\nSuperfamily: Perisphinctoidea
\nFamily: Ataxioceratidae
\nGenus: Ataxioceras
\nSpecies: Ataxioceras discobolum<\/p>\n

Era:<\/b> Mesozoic
\nPeriod:<\/b> Late Jurassic (Unter\u2011Kimmeridgian, ~155\u2013153\u202fMa)
\nOrigin:<\/b> Kulmbach\u2013Kirchleus, Franconian Alb, Bavaria, Germany
\nSpecimen diameter:<\/b> 70\u202fmm<\/p>\n

Fossils of A. discobolum from Kulmbach\u2013Kirchleus occur in sediments belonging to the Hypselocyclum\u2013Lothari Zone of the Unter\u2011Kimmeridgian, representing a shallow epicontinental marine environment. They serve as index fossils for identifying that stratigraphic interval. The presence of this ammonite confirms the correlation of Bavarian strata with coeval sequences in southern Germany and other parts of Europe.<\/p>\n

Photo Taken: July 2025
\nHigh resolution<\/a>
\nFlickr Gallery<\/a><\/p>\n<\/div>\n

Did you like this post?<\/b><\/p>\n","protected":false},"excerpt":{"rendered":"

Ataxioceras discobolum is a species of ammonite from the Late Jurassic, specifically the Unter\u2011Kimmeridgian (approximately 155\u2013153\u202fMa). It is found in the marine sediments of the Kulmbach\u2013Kirchleus area, in the Franconian Alb (Bavaria, Germany), a classic locality for Kimmeridgian studies in Europe. The shell of this ammonite is moderately evolute and displays dense, sharply defined ribbing. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[2],"tags":[521,522,524,526,635,640,1080,1081,1082,1402,1403,1568,1578,1584,2744,3275,3276,3374,3413,4731,4741,4807,4809,4838,4914,5202,5204,5206,5235,5236,5352,5354,5591,5594,6517,6694,6943,7050,7064,7166,7167,7363,7703,7716,7824,7910,8053,8274,8303,8451,8452,8871,8907,9308,9366,9559,9562,9564,9991,10693,11211,11814,11926,12280,12281,12330,12506,13549,13579,14768,13587,14331,14333],"class_list":["post-32005","post","type-post","status-publish","format-standard","hentry","category-related-posts","tag-ammonite","tag-ammonite-collection","tag-ammonitida","tag-ammonoidea","tag-animal","tag-animalia","tag-ataxioceras","tag-ataxioceras-discobolum","tag-ataxioceratidae","tag-bavaria","tag-bavarian","tag-bilateria","tag-biodiversity","tag-biostratigraphy","tag-cephalopoda","tag-collectable","tag-collection","tag-conchologia","tag-conquiliologia","tag-eubilateria","tag-eukaryota","tag-evolute","tag-evolution","tag-extinct","tag-fauna","tag-fosil","tag-fossil","tag-fossilised","tag-franconian-alb","tag-franconian-alb-ammonite","tag-gabriel-paladino-ibanez","tag-gabrielpaladino-com","tag-german-ammonite","tag-germany","tag-hypselocyclum-zone","tag-invertebrate","tag-jurassic-germany","tag-kimmeridgian","tag-kirchleus","tag-kulmbach","tag-kulmbach-ammonite","tag-late-jurassic","tag-lophotrochozoa","tag-lothari-zone","tag-macroconch","tag-malacology","tag-marine","tag-mesozoic","tag-microconch","tag-mollusc","tag-mollusca","tag-nature","tag-nektonic","tag-opisthokonta","tag-ornamentation","tag-paleoenvironment","tag-paleontological","tag-paleontology","tag-perisphinctoidea","tag-protostomia","tag-ribbing","tag-seashell","tag-shell","tag-species","tag-specimen","tag-spiralia","tag-stratigraphy","tag-umbilicus","tag-unter-kimmeridgian","tag-updated","tag-upper-jurassic","tag-zoologia","tag-zoology","has-post-thumbnail"],"tags_input":"ammonite,ammonite collection,ammonitida,ammonoidea,animal,animalia,Ataxioceras,Ataxioceras discobolum,Ataxioceratidae,bavaria,Bavarian,bilateria,biodiversity,biostratigraphy,cephalopoda,collectable,collection,conchologia,conquiliologia,eubilateria,eukaryota,evolute,evolution,extinct,fauna,fosil,fossil,fossilised,Franconian Alb,Franconian Alb ammonite,Gabriel Paladino Iba\u00f1ez,gabrielpaladino.com,German ammonite,Germany,Hypselocyclum Zone,invertebrate,Jurassic Germany,Kimmeridgian,Kirchleus,Kulmbach,Kulmbach ammonite,Late Jurassic,lophotrochozoa,Lothari Zone,macroconch,malacology,marine,mesozoic,microconch,mollusc,mollusca,nature,nektonic,opisthokonta,ornamentation,paleoenvironment,paleontological,paleontology,Perisphinctoidea,protostomia,ribbing,seashell,shell,species,specimen,spiralia,stratigraphy,umbilicus,Unter-Kimmeridgian,Updated,Upper Jurassic,zoologia,zoology","jetpack_shortlink":"https:\/\/wp.me\/phjlBv-8kd","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":30902,"url":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/2025\/07\/14\/catacoeloceras-species\/","url_meta":{"origin":32005,"position":0},"title":"Catacoeloceras species","author":"Gabriel Paladino Ib\u00e1\u00f1ez","date":"July 14, 2025","format":false,"excerpt":"Catacoeloceras is a genus of ammonite that lived during the Early Jurassic, specifically in the Toarcian stage, approximately 183 to 175 million years ago. Its fossils are characteristic of the marine deposits of Millau, in the Aveyron department of France, a classic European locality for Jurassic paleontology. These ammonites are\u2026","rel":"","context":"In "Related posts"","block_context":{"text":"Related posts","link":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/category\/related-posts\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":31627,"url":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/2025\/07\/20\/quenstedticeras-species\/","url_meta":{"origin":32005,"position":1},"title":"Quenstedticeras species","author":"Gabriel Paladino Ib\u00e1\u00f1ez","date":"July 20, 2025","format":false,"excerpt":"Quenstedticeras is a genus of ammonites from the Late Middle Jurassic, specifically the Callovian stage, approximately 164 to 161 million years ago. Its fossils are especially abundant in the marine clays of the Dubki Clay Quarry, near Saratov, southwestern Russia\u2014one of the most productive and best-preserved Middle Jurassic ammonite localities\u2026","rel":"","context":"In "Related posts"","block_context":{"text":"Related posts","link":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/category\/related-posts\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":30352,"url":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/2025\/07\/09\/amaltheus-gibbosus\/","url_meta":{"origin":32005,"position":2},"title":"Amaltheus gibbosus","author":"Gabriel Paladino Ib\u00e1\u00f1ez","date":"July 9, 2025","format":false,"excerpt":"Amaltheus gibbosus is a species of ammonite from the Early Jurassic, more precisely from the Pliensbachian stage, around 190 to 183 million years ago. Due to its rapid evolution and wide geographic distribution, it serves as an excellent index fossil, helping geologists date rock layers with high precision.Its fossils are\u2026","rel":"","context":"In "Related posts"","block_context":{"text":"Related posts","link":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/category\/related-posts\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":37102,"url":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/2026\/06\/07\/epimayaites-species\/","url_meta":{"origin":32005,"position":3},"title":"Epimayaites species","author":"Gabriel Paladino Ib\u00e1\u00f1ez","date":"June 7, 2026","format":false,"excerpt":"Epimayaites is a genus of ammonites from the Late Jurassic, specifically the Oxfordian stage, approximately 163 to 157 million years ago. Its fossils are found in the marine limestones and marls of southwestern Madagascar \u2014 one of the richest Oxfordian ammonite sites in the Indian Ocean region. Specimens of Epimayaites\u2026","rel":"","context":"In "Related posts"","block_context":{"text":"Related posts","link":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/category\/related-posts\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":29828,"url":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/2025\/07\/04\/trachyceras-multituberculatum\/","url_meta":{"origin":32005,"position":4},"title":"Trachyceras multituberculatum","author":"Gabriel Paladino Ib\u00e1\u00f1ez","date":"July 4, 2025","format":false,"excerpt":"Trachyceras multituberculatum is an impressive ammonite from the Carnian stage of the Late Triassic, found mainly in the marine rocks of Guizhou Province, southern China. Most fossils are discovered in thin layers of limestone and shale, often as single shells or fragments. This species is important for paleontologists because it\u2026","rel":"","context":"In "Related posts"","block_context":{"text":"Related posts","link":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/category\/related-posts\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":29250,"url":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/2025\/06\/30\/pleuroceras-species\/","url_meta":{"origin":32005,"position":5},"title":"Pleuroceras species","author":"Gabriel Paladino Ib\u00e1\u00f1ez","date":"June 30, 2025","format":false,"excerpt":"Pleuroceras is a genus of Early Jurassic ammonites (family Amaltheidae) known from the Pliensbachian (~190\u2013183 Ma) of central Europe, particularly Bavaria, Germany. Scientific classification:Kingdom: AnimaliaPhylum: MolluscaClass: CephalopodaSubclass: AmmonoideaOrder: AmmonitidaSuperfamily: AmaltheoideaFamily: AmaltheidaeSubfamily: PleuroceratinaeGenus: PleurocerasSpecies: Pleuroceras sp. Era: MesozoicPeriod: Jurassic (Pliensbachian, ~190\u2013183 Ma)Origin: Bavaria (Bayern), GermanySpecimen size: 45 mm diameter Key species\u2026","rel":"","context":"In "Related posts"","block_context":{"text":"Related posts","link":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/category\/related-posts\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/posts\/32005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/comments?post=32005"}],"version-history":[{"count":1,"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/posts\/32005\/revisions"}],"predecessor-version":[{"id":34241,"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/posts\/32005\/revisions\/34241"}],"wp:attachment":[{"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/media?parent=32005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/categories?post=32005"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/pelecyphora.ddns.net:60123\/GabrielPaladino.com\/wp-json\/wp\/v2\/tags?post=32005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}