Conus poulsenii                                    (Morch, 1874)

 

 89.  Conus  (Conilithes)  poulsenii  Mørch (2).

 

C. antediluvianus  Beyr.  non  Brug. (3)

C. bruguieri  Nyst.  (non  Kien.)  NYST, Coqu. et Polip. foss. Belgique (1843), pag. 585.

 

C. antediluvianus  Brocchi differt  nodulis  coronæ  majoribus  et  paucioribus.

 

Locality:

Sylt  (Forchh.),  Gram  (Reimers,  Johnstr).

Spandet  (Løffler,  Johnstr.),  ø.  f.  Esbjerg  Havn  (Johnstr.),

Sandfuldgaarde  (Dalgas).

Woltrop, northern Ruhr area, Germany

 

Et  enkelt  Exemplar  fra  Sylt  er  65  mm.  langt,

 

Il Conus poulsenii, proveniente dal Tortoniano di Sylt, in Germania, è ritenuto differente dal Conus antidiluvianus a causa dei noduli più grossolani e presenti in numero inferiore (1).

In 1874 Mørch (p. 291) introduced Conus (Conilithes) poulsenii, based on specimens from Sylt (Germany) and Gram, Spandet, Esbjerg and Sandfuldgaarde (Denmark), all late Miocene (Tortonian) in age (1). The single specimen from Sylt had a shell height of 65 mm. The shell was described as different from C. antidiluvianus Brocchi in having fewer and coarser knobs (‘differt nodulis coronæ majoribus et paucioribus’) and Conus ‘antediluvianus’ Beyr. non Brug.’ is mentioned as a synonym.

 

Nyst proposed the new name Conus bruguierii for the species represented by Brocchi (1814, pl. 2, fig. 11). Nyst’s name, however, is a junior synonym of Conus apenninicus (Bronn,1838) (1).

 

 

 

Conus antidiluvianus (3)
Beyrich
Tav. I fig. 1
Conus poulsenii
mm. 22,9
Gram Formation
South Jutland, Denmark
 
 
 
The Gram Formation is a geological formation in Gram, Denmark. It preserves fossils dating from the Miocene period. The formation consists of three layers: the glauconite-rich, the Gram Clay, and the Gram sand.

 

 
Conus poulsenii
mm. 29
Gram Formation
South Jutland, Denmark
[Giancarlo Paganelli]
Conus poulsenii
mm. 22,9
Gram Formation
South Jutland, Denmark
Conus poulsenii
NMR 66164
mm. 11,5
Miocene
Gelderland. Miste (Netherland)



Conus poulsenii var. gymnogyra          (Morch, 1874)

 

Further­more Mørch described as ‘var.? C. gymnospira’(*) another form from Sylt with a shell height of 50 mm, differing by ‘t. latiore spira breviore, anfr. infra carinam obsoletis­sime undulatis, C. derelictus non absimilis’ (= ~ having a broader shell and shorter spire, the whorl part below the carina very slightly undulating, not unlike C. derelictus’) (1).

 

Long  50  mm,  diam  25  mm.

 

Sylt,  (Forchh.)  spm.  2.

 

 

(*) The correct name is “gymnogyra”

 

 

 

Conus poulsenii var. gymnogyra

 

Conus poulsenii var. gymnogyra
(Morch, 1874)
collection no: 59891
mm. 54
Miste - Netherland
Conus poulsenii var. gymnogyra
(Morch, 1874)
collection no: 17672
mm. 52
 Heist op den Berg, Antwerp, Belgium
Conus poulsenii var. gymnogyra
(Morch, 1874)
collection no: 55551
mm. 30
 Gran, South Jutland, Denmark

 

 

 

 


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