Conus
(Lautoconus) sp. (Thivaiou et
al., 2019)
Description (1)
Shell
inflated, sides slightly convex. Protoconch not preserved. Moderately low
spire; whorl tops with 3 cords; last whorl with prominent, slightly rounded
shoulder. Spiral sculpture in adapical half of the shell, consists of
irregularly-spaced striae. Aperture poorly preserved, appears moderately wide.
Colour pattern consists of irregularly-spaced dots of variable sizes.
Remarks (1)
The specimen
recovered in the present material although incomplete, shows some characters
that would place it closer to the genus Lautoconus Monterosato, 1923:
these are mainly the whorl tops with sculpture, the shouldered last whorl and
the spiral sculpture at the base of the shell. Some doubts arise since the
early teleoconch spiral structure cannot be assessed and the subsutural flexure
cannot be measured due to the preservation of the specimen. This does not
allow for a certain attribution to the genus Lautoconus.
Nevertheless, the present specimen has similar spiral and whorl top sculpture
with the type specimen of the genus. The species seems to have only a primary
colour pattern, with the bands of dots being equidistant whereas spirally,
their disposition is irregular (distance between each dot). The pattern is
comparable to that of Kalloconus berghausi (Michelotti, 1847) from the
middle Miocene of Turkey as illustrated in Landau et al. (2013).
Distribution. — Early Miocene. Proto-Mediterranean Sea: Greece (1).
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Lautoconus sp. (1) AMPG(IV) 2473 26,0 x 14,5 mm. Pentalofos Formation, which consists of
sandstone sediments of late Oligocene (Chattian) to the early Miocene (late
Aquitanian-Burdigalian) age East of the village of Felli, SE of Grevena
City, by the river Aliakmo |
2. Monteiroconus mercati (Brocchi, 1814) (3) NHMW 1847/0058/0605 locality 17, Seyithasan height 100.0 mm |
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3. Monteiroconus mercati (Brocchi, 1814) (3) NHMW 1847/0058/0610 locality 17, Seyithasan height 77.1 mm |
4. Monteiroconus mercati (Brocchi, 1814) (3) NHMW 1847/0058/0611 locality 17, Seyithasan height 63.3 mm |
Age, morphology and color pattern suggest that it may
be a specimen of the group to which Conus antiquus, Conus mercati
and Conus pulcher belong.
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Lautoconus sp. (1) AMPG(IV) 2473 |
Conus mercati var. ligerianamm. 47 Aquitanien (Lower Miocene) – St. Martin d’Oney |
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Conus (Monteiroconus)
tsampikaensis n. sp. (2)
the
Pleistocene of Rhodes (Greece)
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Lower Miocene |
Upper
Miocene |
Middle-Upper Pliocene |
Recent |
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Conus mercati var. ligerianamm. 47 Aquitanien (Lower Miocene) St. Martin d’Oney |
Conus mercatiUpper Miocene - Montegibbio mm. 44 x 25 [Nathan Quickfinger] |
Fig. 8 Conus pulcher n. i6367 (1) mm. 50 x 27 (juvenilis) |
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Conus pulcher prometheus ( Hwass in Bruguière, 1792 ) 154mm ×
79mm Abidjan -
Costa d’Avorio |
Monteiroconus antiquus NHMW 1847/0058/0441 locality 17, Seyithasan (Turchia) height 139.2 mm [p. 241] |
Fig. 1 Conus pulcher n. i6366 mm. 130,5 x 75 |
Fig. 5 Conus pulcher n.
i6368 mm. 110,5
x 66 |
Fig. 8 Conus pulcher n. i6367 mm. 50 x 27 (juvenilis) |
Lautoconus sp. (1) AMPG(IV) 2473 26,0 x 14,5 mm. |
Bibliografia Consultata