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Pseudomuderongia
From Williams et al., 2017:
[Pseudomuderongia, Jain and Khowaja-Ateequzzaman, 1984, p. 40
Type species: originally as Muderongia testudinaria, Burger, 1980b (fig.9B)] ; Pseudomuderongia testudinaria, Jain and Khowaja-Ateequzzaman, 1984
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Original description: [Jain and Khowaja-Ateequzzaman, 1984]:
Description:
Cyst dorsoventrally flattened, bilaterally symmetrical, outline rhombic to pentagonal, composed of thin outer membrane and an inner body or capsule.
Periphragm prolonged into one apical, two lateral and two antapical horns. Antapical concavity prominent.
Archaeopyle apical, sutures zig-zag (tA), operculum free.
Paracingulum present or absent.
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Stover and Williams, 1987, p. 181:
Affinities:
Pseudomuderongia is distinguished from Muderongia on the presence of two antapical horns separated by a prominent antapical concavity. Jain and Khowaja-Ateequzzaman (1984, p. 37) stated that Muderongia is characterized as follows: "Cyst dorsoventrally flattened, bilaterally symmetrical, cavate to cornucavate, shape rhombic to subrhombic, inner body (capsule) present; periphragm smooth to slightly ornamented, prolonged into four equidistant horns; apical and antapical horns always along the longitudinal median line lying opposite to each other; lateral horns two, postcingular; sulcal notch offset, paratabulation may or may not be present, where present represents gonyaulacacean type 4`, 6", 6c, 6"`,1 p., 1````; archaeopyle apical, type (tA) ".
However, in the accompanying illustrations of Muderongia mcwhaei Cookson and Eisenack 1958, Jain and Khowaja-Ateequzzaman (fig. 3) show several specimens in which a second antapical horn or prominence is developed. The variable development of a second antapical horn makes it an impractical distinction on which to separate the genera Muderongia and Pseudomuderongia. Therefore, we consider the two genera synonymous, with Muderongia being the senior synonym.
[Pseudomuderongia, Jain and Khowaja-Ateequzzaman, 1984, p. 40
Type species: originally as Muderongia testudinaria, Burger, 1980b (fig.9B)] ; Pseudomuderongia testudinaria, Jain and Khowaja-Ateequzzaman, 1984
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Jain and Khowaja-Ateequzzaman, 1984]:
Description:
Cyst dorsoventrally flattened, bilaterally symmetrical, outline rhombic to pentagonal, composed of thin outer membrane and an inner body or capsule.
Periphragm prolonged into one apical, two lateral and two antapical horns. Antapical concavity prominent.
Archaeopyle apical, sutures zig-zag (tA), operculum free.
Paracingulum present or absent.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Stover and Williams, 1987, p. 181:
Affinities:
Pseudomuderongia is distinguished from Muderongia on the presence of two antapical horns separated by a prominent antapical concavity. Jain and Khowaja-Ateequzzaman (1984, p. 37) stated that Muderongia is characterized as follows: "Cyst dorsoventrally flattened, bilaterally symmetrical, cavate to cornucavate, shape rhombic to subrhombic, inner body (capsule) present; periphragm smooth to slightly ornamented, prolonged into four equidistant horns; apical and antapical horns always along the longitudinal median line lying opposite to each other; lateral horns two, postcingular; sulcal notch offset, paratabulation may or may not be present, where present represents gonyaulacacean type 4`, 6", 6c, 6"`,1 p., 1````; archaeopyle apical, type (tA) ".
However, in the accompanying illustrations of Muderongia mcwhaei Cookson and Eisenack 1958, Jain and Khowaja-Ateequzzaman (fig. 3) show several specimens in which a second antapical horn or prominence is developed. The variable development of a second antapical horn makes it an impractical distinction on which to separate the genera Muderongia and Pseudomuderongia. Therefore, we consider the two genera synonymous, with Muderongia being the senior synonym.