Craticula acidoclinata has wider valves with narrower apices. Craticula cuspidata has wider rhombic-lanceolate valves, much narrower apices, and a central area with concave sides. Craticula johnstoniae has rostrate to subcapitate apices. Craticula pampeana has larger valves and a lower stria and areola density.

LM scalebar = 10 µm
Length Range
68-113 µm
Width Range
15.6-19.5 µm
Striae in 10 µm
14 (middle) to 18 (ends)
Craticula sardiniana LM1
Craticula sardiniana LM2
Craticula sardiniana LM3
Craticula sardiniana LM6
Craticula sardiniana LM4
Craticula sardiniana LM5
Craticula sardiniana LM1 Craticula sardiniana LM2 Craticula sardiniana LM3 Craticula sardiniana LM6 Craticula sardiniana LM4 Craticula sardiniana LM5

Craticula acidoclinata

Lange-Bert. and Metzeltin 1996

Length Range
94-168 µm
Width Range
22-29 µm
Striae in 10 µm
12-14
Cratacid1 Cratacid2 Cratacid3 Cratacid4 Cratacid5 Cratacid6 Cratacid7

Craticula cuspidata

(Kütz.) D.G.Mann 1990

Length Range
95-157 µm
Width Range
24-36 µm
Striae in 10 µm
12-14 transverse, 24-26 longitudinal
C Cuspidata Gray 1 C Cuspidata Gray 5 C Cuspidata Gray 4 C Cuspidata Valve Forms Gray C Cuspidata Gray 3 C Cuspidata Gray 2
Length Range
78-105 µm
Width Range
18.0-19.3 µm
Striae in 10 µm
14 (center) to 17 (apices); 10-15 Heribaudii stage
Craticula johnstoniae LM1 Craticula johnstoniae LM7 Craticula johnstoniae LM2 Craticula johnstoniae LM3 Craticula johnstoniae LM5 Craticula johnstoniae LM4

Craticula pampeana

(Freng.) Lange-Bert. 2003

Length Range
139-274 µm
Width Range
29-45 µm
Striae in 10 µm
10-12
Craticula pampeana LM4 Craticula pampeana LM2 Craticula pampeana LM3 Craticula pampeana LM1 Craticula pampeana LM5