Conus (Hemiconus) filifer (Edwards, 1857))

Descrizione e caratteristiche:

Two species in the middle Lutetian of France and England, Conus parisiensis (Deshayes, 1865) and C. filifer (Edwards, 1857) both retained a multispiral protoconch and developed a smooth, straight-sided body whorl and have been thought to represent Conilithes or other genera (e.g. TRACEY & TODD, 1996). However, the subsutural row of beads and the spire ornament of tubercles crossed by spiral cords, best seen in immature shells, show that they should be referred to Hemiconus ⁽²⁾.

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Fig. 6a-b : Hemiconus filifer (Edwards, 1857)

middle Lutetian, Bracklesham Bay (W. Sussex)

a) NHMUK PI OR 71195(2) (coll. EDWARDS)

b) (protoconch)

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Bibliografia Consultata

· (1) - Edwards, F. E., 1856. Descriptions of Shells from the Older Tertiaries of England. A Monograph of the Eocene Mollusca, or descriptions of shells from the older Tertiaries of England. Part III, No. II. Prosobranchiata (continued), 3 (2 )

• (2) - Steve TRACEY, Brian CRAIG, Laurent BELLIARD & Olivier GAIN. One, four or forty species? - early Conidae (Mollusca, Gastropoda) that led to a radiation and biodiversity peak in the late Lutetian Eocene of the Cotentin, NW France.