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Glomodinium
From Fensome et al., 2019:
"Glomodinium", Dodekova, 1975, p.26.
Taxonomic senior synonym: Evansia, according to Jansonius (1986, p.208) and Lentin and Williams (1993, p.214).
Taxonomic senior synonym: Pareodinia, according to Stover and Evitt (1978, p.116–117) -- however, Dörhöfer and Davies (1980, p.12) retained Glomodinium.
Type: Dodekova, 1975, pl.5, figs.1–2, as Glomodinium reticulopilosum.
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Original description: [Dodekova, 1975]: (Translation: LPP):
Diagnosis:
Sphaeroidal to subsphaeroidal body with apical horn. Antapical protrusions are lacking. The body has two-layered wall. The endophragm is thin and may be distinguished in the base of the apical horn. The periphragm is thicker, forms the apical horn and the ornamentation. No traces of furrows and tabulation. The ornamentation on the periphragm is represented by granules, spines, fine reticulum with septa along the ribs or hair-like processes. The surface of the periphragm may be smooth.
The archaeopyle is intercalary, composed of three plates (type 3I).
Affinities:
The existence of intercalary archaeopyle, composed of 3 plates, apical horn and ornamentation distinguish the new genus from genus Pareodinia and from all known in the literature genera. The intercalary archaeopyle -3I- determines the new taxon to Peridiniacean dinoflagellate lineage (Wall and Dale, 1968). The genus Glomodinium resembles genus Cometodinuim Deflandre and Courteville, but by the latter apical horn and information about the archaeopyle is lacking, while distinct cingulum is established.
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Arhus et al., 1989, p. 44:
Remarks: Pocock (1972) described and figured Tenua evittii and the type species of Evansia, E. granulata. From Pocock's figures and according
to Dodekova (1975) and Jansonius (1986) it is evident that Pocock misinterpreted the 3I archeopyle of his T. evitti as apical. Jansonius (1986)
presumed the holotype to be lost, chose a lectotype and described it as Evansia evittii. Jansonius (1986) also emended the diagnosis of E.
granulata and interpreted some faint delineations as the anterior margins of la and 3a. Only 2a is clearly delineated as a hexagonal paraplate, which led Pocock (1972) to interpret the archeopyle as simple intercalary (I).
Dodekova (1975) erected the genus Glomodinium for two-layered pareodiniceans with a 3I archeopyle and described the species Glomodiniun reticulopilosum. She also mentioned the possibility that Tenua evittii Pocock 1972 and Pareodinia tripartitus Johnson & Hills 1973 should be transferred to Glomodinium. Dodekova's diagnosis of Glomodinium is fully appropriate and is very similar to Jansonius's emended diagnosis for Evansia. Dörhöfer & Davies (1980) distinguished between Pareodinia and Glomodinium on the basis of archeopyle type in the same way as Dodekova (1975). Their view conflicts with the opinions of Johnson & Hills (1973) and Wiggins (1975).
Because of the inadequate original descriptions and interpretations of E. granulata and T. evittii, the faint intercalary delineations in E. granulata and the existence of the genus Glomodinium, we think it is better to retain Glomo dinium than to emend the diagnosis of Evansia, in contrast
to the opinion of Jansonius (1986). The lost holotype of T. evittii, which is the one of the two holotypes of Pocock with the clearest 3I archeopyle and preferably should have been chosen as the type species of Evansia, is also an argument for rejection of this genus.
"Glomodinium", Dodekova, 1975, p.26.
Taxonomic senior synonym: Evansia, according to Jansonius (1986, p.208) and Lentin and Williams (1993, p.214).
Taxonomic senior synonym: Pareodinia, according to Stover and Evitt (1978, p.116–117) -- however, Dörhöfer and Davies (1980, p.12) retained Glomodinium.
Type: Dodekova, 1975, pl.5, figs.1–2, as Glomodinium reticulopilosum.
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Original description: [Dodekova, 1975]: (Translation: LPP):
Diagnosis:
Sphaeroidal to subsphaeroidal body with apical horn. Antapical protrusions are lacking. The body has two-layered wall. The endophragm is thin and may be distinguished in the base of the apical horn. The periphragm is thicker, forms the apical horn and the ornamentation. No traces of furrows and tabulation. The ornamentation on the periphragm is represented by granules, spines, fine reticulum with septa along the ribs or hair-like processes. The surface of the periphragm may be smooth.
The archaeopyle is intercalary, composed of three plates (type 3I).
Affinities:
The existence of intercalary archaeopyle, composed of 3 plates, apical horn and ornamentation distinguish the new genus from genus Pareodinia and from all known in the literature genera. The intercalary archaeopyle -3I- determines the new taxon to Peridiniacean dinoflagellate lineage (Wall and Dale, 1968). The genus Glomodinium resembles genus Cometodinuim Deflandre and Courteville, but by the latter apical horn and information about the archaeopyle is lacking, while distinct cingulum is established.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Arhus et al., 1989, p. 44:
Remarks: Pocock (1972) described and figured Tenua evittii and the type species of Evansia, E. granulata. From Pocock's figures and according
to Dodekova (1975) and Jansonius (1986) it is evident that Pocock misinterpreted the 3I archeopyle of his T. evitti as apical. Jansonius (1986)
presumed the holotype to be lost, chose a lectotype and described it as Evansia evittii. Jansonius (1986) also emended the diagnosis of E.
granulata and interpreted some faint delineations as the anterior margins of la and 3a. Only 2a is clearly delineated as a hexagonal paraplate, which led Pocock (1972) to interpret the archeopyle as simple intercalary (I).
Dodekova (1975) erected the genus Glomodinium for two-layered pareodiniceans with a 3I archeopyle and described the species Glomodiniun reticulopilosum. She also mentioned the possibility that Tenua evittii Pocock 1972 and Pareodinia tripartitus Johnson & Hills 1973 should be transferred to Glomodinium. Dodekova's diagnosis of Glomodinium is fully appropriate and is very similar to Jansonius's emended diagnosis for Evansia. Dörhöfer & Davies (1980) distinguished between Pareodinia and Glomodinium on the basis of archeopyle type in the same way as Dodekova (1975). Their view conflicts with the opinions of Johnson & Hills (1973) and Wiggins (1975).
Because of the inadequate original descriptions and interpretations of E. granulata and T. evittii, the faint intercalary delineations in E. granulata and the existence of the genus Glomodinium, we think it is better to retain Glomo dinium than to emend the diagnosis of Evansia, in contrast
to the opinion of Jansonius (1986). The lost holotype of T. evittii, which is the one of the two holotypes of Pocock with the clearest 3I archeopyle and preferably should have been chosen as the type species of Evansia, is also an argument for rejection of this genus.