Agathotoma angusta

Agathotoma angusta
Shell of † Agathoma angusta (specimen at MNHN, Paris)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Mangeliidae
Genus:	Agathotoma
Species:	A. angusta
Binomial name
Agathotoma angusta (Jan in Bellardi, 1847)
Synonyms [1]
† Mangilia angusta(Jan in Bellardi, 1847) † Pleurotoma angustaJan in Bellardi, 1847 (original description) † Raphitoma angustaBellardi, 1847

Agathotoma angusta is an extinct species of sea snail, a marine gastropod mollusk in the family Mangeliidae. ^[1]

Description

(Original description in Latin) The shell presents a somewhat spindle-shaped and narrow form with a smooth surface. It features elongated and flattened whorls, 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 is elongated, and its lips lie parallel. The outer lip is thickened and deeply fissured, exhibiting a somewhat sinuous shape anteriorly. The columella is smooth. ^[2]

Distribution

This extinct marine species has been found in Pliocene and Tertiary strata in Lombardy, Italy.

References

1. 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
2. Bellardi, Luigi. Monografia delle Pleurotome fossili del Piemonte. Stamperia reale, 1847 This article incorporates text from this source, which is in the public domain .

• 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

• 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
• Della Bella, Giano; Tabanelli, Cesare (2004). "Revisione della malacofauna pliocenica di Rio Albonello (Brisighella, Ravenna) - III - Testyleda annaritae n.sp" (PDF). Quaderno di Studi e Notizie di Storia naturale della Romagna (in Italian). 19: 7–16.
• Tabanelli, Cesare (2008). "Associazioni di paleocomunità batiali a molluschi bentonici nel Pliocene della Romagna" (PDF). Quaderno di Studi e Notizie di Storia naturale della Romagna (in Italian). 26: 1–80.
• Landau, B., Harzhauser, M. and Giannuzzi-Savelli, R. (2023). "The Pliocene Gastropoda (Mollusca) of Estepona, southern Spain. Part 18: Mangeliidae (Gastropoda, Conoidea)" (PDF). Cainozoic Research. 23 (1): 47–111.