{{Short description|Extinct species of gastropod}} {{Speciesbox | taxon =Agathotoma angusta | image = Mangelia angusta 001.jpg | image_caption = Shell of † ''Agathoma angusta'' (specimen at MNHN, Paris) | authority =(Jan in Bellardi, 1847) | synonyms_ref = <ref name="WoRMS" /> | synonyms = * † ''Mangilia angusta'' <small>(Jan in Bellardi, 1847)</small> * † ''Pleurotoma angusta'' <small>Jan in Bellardi, 1847</small> (original description) * † ''Raphitoma angusta'' <small>Bellardi, 1847</small> | display_parents = 3 }}
'''''Agathotoma angusta''''' is an extinct species of [[sea snail]], a marine [[gastropod]] [[mollusk]] in the [[Family (taxonomy)|family]] [[Mangeliidae]].<ref name="WoRMS">Bouchet, P. (2016). Agathotoma angusta (Bellardi, 1847) †. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=867987 on 2017-02-26</ref>
==Description== (Original description in Latin) The shell presents a somewhat spindle-shaped and narrow form with a smooth surface. It features elongated and flattened [[Whorl (mollusc)|whorl]]s, which are longitudinally ribbed. The ribs appear sharp, with interspaces that are smaller, somewhat oblique, and somewhat continuous, extending down to the [[siphonal canal]] on the [[body whorl]]. The siphonal canal is distinct, dilated, and recurved. The [[Aperture (mollusc)|aperture]] is elongated, and its lips lie parallel. The outer [[Lip (gastropod)|lip]] is thickened and deeply fissured, exhibiting a somewhat sinuous shape anteriorly. The [[Columella (gastropod)|columella]] is smooth. <ref>[https://biodiversitylibrary.org/page/7664911 Bellardi, Luigi. ''Monografia delle Pleurotome fossili del Piemonte''. Stamperia reale, 1847] {{source-attribution}}</ref>
==Distribution== This extinct marine species has been found in [[Pliocene]] and [[Tertiary period|Tertiary]] strata in [[Lombardy]], [[Italy]].
==References== {{Reflist}} * Ceulemans, L.; Van Dingenen, F.; Landau B. M. (2018). The lower Pliocene gastropods of Le Pigeon Blanc (Loire-Atlantique, northwest France). Part 5 – Neogastropoda (Conoidea) and Heterobranchia (fine). Cainozoic Research. 18(2): 89-176
==External links== * [https://www.biodiversitylibrary.org/page/36852875#page/333/mode/1up Cossmann M. (1895-1924). Essais de paléoconchologie comparée. Paris, published by the author. Part 1: 1-159, pl. 1-7 [1895]. Part 2: 1-179, pl. 1-8 [1896]. Part 3: 1-201, pl. 1-8 [1899]. Part 4: 1-293, pl. 1-10 [1901]. Part 6: 1-261, pl. 1-7 [1904]. Part 7: 1-261, pl. 1-14 [1906]. Part 8: 1-248, pl. 1-4 [1909]. Part 9: 1-248, pl. 1-4 [1912]. Part 10: 1-292, pl. 1-12 [1916]. Part 11: 1-388, pls 1-11 [1918]. Part 12: 1-348, pls 1-10 [1921]. Part 13: 1-345, pls 1-12 [1924] (2ème livraison), p. 1-179] *{{cite journal|first1=Giano|last1=Della Bella|first2=Cesare|last2=Tabanelli |year=2004|title=Revisione della malacofauna pliocenica di Rio Albonello (Brisighella, Ravenna) - III - ''Testyleda annaritae'' n.sp.|journal=Quaderno di Studi e Notizie di Storia naturale della Romagna|pages=7–16|volume=19|language=Italian|url=http://www.ssnr.it/19-2.pdf}} *{{cite journal|first=Cesare|last=Tabanelli |year=2008|title=Associazioni di paleocomunità batiali a molluschi bentonici nel Pliocene della Romagna|journal=Quaderno di Studi e Notizie di Storia naturale della Romagna|pages=1–80|volume=26|language=Italian|url=http://www.ssnr.it/26-1.pdf}} * {{cite journal |last1=Landau, B., Harzhauser, M. and Giannuzzi-Savelli, R. |title=The Pliocene Gastropoda (Mollusca) of Estepona, southern Spain. Part 18: Mangeliidae (Gastropoda, Conoidea). |journal=Cainozoic Research |date=2023 |volume=23 |issue=1 |pages=47-111 |url=https://natuurtijdschriften.nl/pub/1023309/CR2023023001002.pdf}}
{{Taxonbar|from=Q30592966}}
[[Category:Agathotoma|angusta]] [[Category:Gastropods described in 1847]]