Conus belus

Conus (Lautoconus) belus (d’Orbigny, 1852)

Conus corynetes (Fontannes, 1880)

Conus corynetes ovoligustica (Sacco, 1893)

Conus corynetes pergracilicauda (Sacco, 1893)

Conus fuerteventurensis (Pealaez & Gonzales, 2018)

Descrizione e caratteristiche:

Il Conus corynetes (Pliocene) è considerato un sinonimo del Conus belus (Miocene).

Per quanto riguarda la colorazione, il C. corynetes presenta linee longitudinali ondulate sull’ultimo giro. Inoltre, Sacco riferisce di un esemplare rinvenuto a Zipola, in provincia di Savona, che presenta numerose linee trasversali di colore ocraceo: questa colorazione è ben visibile in un esemplare di Massimo Cresti, del Pliocene della Toscana (v. sotto).

Distribuzione:

E’ segnalato in ⁽¹⁾:


Conus pyrula ⁽¹⁾ da cui il C. belus		Conus belus (da Sacco)

Conus corynetes ⁽⁵⁾	C. corynetes pergracilicauda		C. corynetes pseudangulosa	C. corynetes ovoligustica Un esemplare di Zinola (Savona) attribuibile a questa specie presenta numerose lineette ocracee trasversali ⁽⁴⁾

Conus fuerteventurensis

mm. 27,3 x 18,0

Tortoniano

Remarks.

The genus Conus Linnaeus, 1758 is represented by over 650 recent species and includes at least 800 known fossil species ( Röckel et al. 1995). Such exceptional biodiversity makes this genus one of the most prolific among current marine invertebrates. Today, it is distributed primarily in warm seas, with very few species present in cold or temperate waters like the Mediterranean. The reasons for this extraordinary evolutionary radiation are still largely unknown.

After comparing Conus fuerteventurensis with various Conus species from the European Neogene, this new species from Fuerteventura vaguely resembles Conus clavatus Lamarck, 1810 from the European Pliocene. However, Conus fuerteventurensis sp. nov. differs from it in having a more elongated last whorl.

On considering the upper Miocene, there is some similarity with Conus eschewegi Pereira da Costa, 1866 from the Tortonian of Algarve ( Portugal), and the Mediterranean Paratethys, but this species has a more rounded profile and a lower spire. Among the Conus species present in the Canary Islands and nearby biogeographic areas, the new species presents similarities with three:

Conus guinaicus Hwass in Bruguière, 1792 has a higher spire, is narrower and more elongated, its aperture is wider and it has two well-developed abapical folds.
The fossil species Conus fuerteventurensis sp. nov. can be distinguished from C. genuanus Linnaeus, 1758 by its smaller size as well as by its blunt wide adapical fold that is unlike that of the extant species which is pointed.
Conus ermineus Born, 1778 presents a higher spire, its aperture is adapically wider and it has some strong folds in the adaxial area of the base.

Moreover, the rounded appearance and concave spire with smooth profile of this new species make it substantially different from the other fossil species found in the Miocene of the Canary Islands.


Conus pyrula ⁽¹⁾ da cui il C. belus	Conus belus (da Sacco)

Conus corynetes (Fontannes, 1880) [AZFC 471-02] - [ 28,8 x 16,8 mm.] Pliocene – Tetuan - Marocco

*Conus corynetes* (Fontannes, 1880) [ 44,6 x mm.] – Tetuan – Pliocene Esemplare di dimensioni maggiori rispetto al 471-02: apice meno appuntito. Le linee trasversali sembrano più fitte rispetto a quelle dell’esemplare AZFC 471-02 perché questo esemplare è più alto.	*Conus corynetes* (Fontannes, 1880) 17.9 mm Baix Llobregat, Barcelona, Spain.

Conus corynetes (Fontannes, 1880) [AZFC 471-01] - [ 25,2 x 15,7 mm.] Piacenziano - Pliocene – Estepona Basin el Velerin Conglomerates - Spagna

Zancleano (Pliocene Inferiore) – Montalcino – Toscana (Massimo Cresti - Facebook)	Zancleano (Pliocene Inferiore) – Montalcino – Toscana (Massimo Cresti - Facebook) [Sulla destra: Conus corynetes ovoligustica. Un esemplare attribuibile a questa specie presenta numerose lineette ocracee trasversali ⁽⁴⁾.] V. Conus bulbus e C. bulbus zebroides - Angola

Lautoconus orri (Ninomiya & da Motta in da Motta, 1982) mm. 25,8 x 16,0 Paratipo – Solifort (Gambia). Tratto da Biodiversity	Lautoconus orri (Ninomiya & da Motta in da Motta, 1982) mm. 25,8 x 16,0 Paratipo – Solifort (Gambia). Tratto da Biodiversity

Africonus cabraloi (Cossignani, 2104) Olotipo – Isole di Capo Verde. Tratto da Conchology


Conus corynetes (Fontannes, 1880) mm. 28,8 x 16,8 Pliocene – Tetuan - Marocco [AZFC 471-02]

Conus corynetes (Fontannes, 1880) mm. 25,2 x 15,7 Piacenziano - Pliocene – Estepona Basin el Velerin Conglomerates – Spagna [AZFC 471-01]


*Conus corynetes* (Fontannes, 1880) [ 44,6 x mm.] – Tetuan – Pliocene		Conus corynetes (Fontannes, 1880) mm. 28,8 x 16,8 Pliocene – Tetuan – Marocco [AZFC 471-02]

Conus fuerteventurensis mm. 27,3 x 18,0	Conus corynetes (Fontannes, 1880) [ 25,2 x 15,7 mm.] Pliocene – Estepona Basin el Velerin Conglomerates – Spagna [AZFC 471-01]	*Conus corynetes* (Fontannes, 1880) 17.9 mm Baix Llobregat, Barcelona, Spain.

Bibliografia Consultata