Geology Reference
In-Depth Information
Plate 77 Calpionellids
Calpionellids are very small bell-shaped, amphora-like or cylindrical microfossils restricted to Late Jurassic to
lower Early Cretaceous pelagic limestones. The plate displays longitudinal sections of taxa used in the standard
biochronology of the Jurassic-Cretaceous time interval (see Fig. 10.32).
1
Chitinoidella boneti
Doben. The test has a microgranular calcitic wall and appears dark in transmitted light due to an
ultrastructure that differs from almost all other calpionellids (collected in the family Calpionellidae). Middle Tithonian:
Pontaux (Drôme), France.
2
Crassicollaria intermedia
(Durand-Delga). Arrows point to the diagnostic criteria of the genus (thickening at the base of
the collar caused by oral ring). Late Tithonian, interval A2: Serres-Montclus, France.
3
Crassicollaria brevis
(Remane). Late Tithonian, interval A3: Same locality as -> 1.
4
Crassicolaria parvula
Remane. Early Berriasian, interval B: Chevallon, France.
5
Praetintinnopsella andrusovi
Borza. Tithonian (
Chitinoidella
zone): Pointaix (Isère), France.
6
Calpionella alpina
Lorenz. Black arrows point to the short and erect collar characteristic of
Calpionella
. White arrow
indicates the bell-shaped aboral part of the test. Lowermost Berriasian, lower part of interval B: Saint-Penteraix, France.
7
Calpionella alpina
Lorenz. Large specimen, characteristic of time interval A2/A3. Late Tithonian, interval A2: Same
locality as -> 2.
8
Calpionella elliptica
Cadisch. Berriasian, interval C: Same locality as -> 2.
9
Remaniella ferasini
(Catalano). Early Middle Berriasian,
Calpionella
zone, interval B: Ra Stua section, Belluno, Italy.
10
Remaniella catalanoi
Pop. Early Middle Berriasian,
Calpionella
zone uppermost interval B or lowermost interval C:
Same locality as -> 9.
11
Remaniella duranddelgai
Pop. Early Middle Berriasian,
Calpionella
zone, interval B: Same locality as -> 9.
12
Remaniella colomi
Pop. Early/Middle Berriasian.
Calpionella
zone, interval C: Same locality as -> 9.
13
Remaniella colomi
Pop. Early/Middle Berriasian.
Remaniella
is characterized by a collar consisting of three elements
(arrows).
Calpionella
zone, interval C: Same locality as -> 9.
14
Remaniella cadischiana
(Colom). Middle Berriasian,
Calpionella
zone, interval C. Same locality as -> 9.
15
Calpionellopsis simplex
(Colom). The arrow points to the simple ringlike collar surrounding the oral opening. Late
Berriasian,
Calpionellopsis
zone, interval D: Majorca, Spain.
16
Calpionellopsis oblonga
(Cadisch). Late Berriasian, interval D3: Berrias, France.
17
Sturiella dolomitica
Grün and Blau. Late Berriasian, interval D1,
Calpionellopsis
zone,
simplex
subzone: Locality as -> 9.
18
Sturiella oblonga
Borza. Late Berriasian.
Calpionellopsis
zone, interval D2;
oblonga
subzone: Same locality as -> 9.
19
Borzaites atavus
(Grün and Blau). The arrow points to the ringlike collar. Holotype. Late Berriasian.
Calpionellopsis
zone, interval D2,
oblonga
subzone: Same locality as -> 9.
20
Praecalpionellites hillebrandti
Grün and Blau.
Praecalpionellites
is characterized by a two-fold collar with both ele-
ments separated from the lorica (arrow). Late Berriasian.
Calpionellopsis
zone,
oblonga
subzone, interval D3. Same locality
as -> 9.
21 Cone-in-cone stacking: Outer form is
Praecalpionellites murgeanui
(Pop), smaller inner form is ?
Lorenziella
sp. Late
Berriasian.
Calpionellopsis
zone,
oblonga
subzone, interval D3: Same locality as -> 9.
22
Praecalpionellites siriniaensis
Pop. Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 9.
23
Praecalpionellites filipescui
(Pop). The nannomicrite consists of disintegrated elements of
Nannoconus
(inset bottom
right). Nannoconid assemblages are used to establish biozones. Late Berriasian.
Calpionellopsis
zone,
oblonga
subzone,
interval D3: Locality as -> 9.
24
Praecalpionellites dadayi
(Knauer). Late Berriasian.
Calpionellopsis
zone,
oblonga
subzone, interval D3: Locality as -> 9.
25
Calpionellites darderi
(Colom). The arrow points to a diagnostic feature of
Calpionellites
, the arrangement of parts of the
collar parallel to the lateral walls. Early Valanginian,
Calpionellites
zone, interval E: Fanes area, Italy.
26
Calpionellites darderi
(Colom). Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 25.
27
Calpionellites major
(Colom). Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 25.
28
Calpionellites coronatus
Trejo. Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 25.
29
Tintinnopsella carpathica
(Murgeanu and Filipescu). Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 9.
30
Tintinnopsella carpathica
(Murgeanu and Filipescu). Black arrows point to the flaring collar, the white arrow to the
caudal appendix. Berriasian, interval C: Berrias, France.
31
Tintinnopsella longa
(Colom). Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 25.
32
Tintinnopsella longa
(Colom). Berriasian, interval D2: Berrias, France.
33
Lorenziella plicata
Remane. Berriasian, upper part of interval D2: Same locality as -> 32.
34
Lorenziella hungarica
Knauer and Nagy. Berriasian, interval D3: Same locality as -> 32.
35
Lorenziella hungarica
Knauer and Nagy. Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 9.
36
Lorenziella ruggierii
(Catalano). Early Valanginian,
Calpionellites
zone, interval E: Same locality as -> 9.
-> 1-8, 15, 16, 30-34: Courtesy of J. Remane (Neuchâtel); 9-14, 17-29, 35, 36: Courtesy of J. Blau (Giessen)
