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Necrobroomea
From Williams et al., 2017:
[Necrobroomea, Wiggins, 1975, p. 111; Emendation: Below, 1990, p. 52-53
Tax. jr. syn. of Imbatodinium Vozzhennikova, 1967, according to Dörhöfer and Davies, 1980, and Below, 1990. Lentin and Williams, 1993, followed Lentin and Vozzhennikova`s 1990 emendation of Imbatodinium, and retained it as a separate genus.
Tax. sr. syn. of Aprobolocysta Duxbury, 1977, according to Below, 1990. Lentin and Willimas, 1993, followed Pourtoy's 1988 emendation of Aprobolocysta and retained it as a separate genus.
Type species: originally as Broomea? longicornuta, Alberti, 1961 (pl.5, fig.19)] ; Necrobroomea longicornuta, Wiggins, 1975; emend. Below, 1990
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Original description: [Wiggins, 1975]:
Diagnosis:
Proximate fossil cyst, ambitus ovoidal to elongate ovoidal, with one apical and two antapical horns. Cyst wall single layered. Archaeopyle apical, and archaeopyle suture irregular, closer to the apex dorsally, and expressing a distinct sulcal notch ventrally. operculum simple and free. Cyst wall ornamentation variable.
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Emendation:
Below, 1990: (Translation: LPP):
For species with an appearance similar of Necrobroomea Wiggins 1975, emend. Below 1990, the following genera have been erected in literature:
- Imbatodinim Vozzhennikova 1967, emend. Dörhöfer and Davies 1980
- Necrobroomea Wiggins 1975
- Batioladinium Brideaux 1975
- Aprobolocysta Duxbury 1977, emend. Duxbury 1980
Necrobroomea (publ. 25-4-1975) has priority over Batioladinium (publ. 15-6-1975).
The position of Imbatodinium has been unclear. Vozzhennikova 1967 describes for Imbatodinium, with type-species I.kondratjevii, an apical archaeopyle. Wiggins 1975, Lentin & Williams 1977 and Stover & Evitt 1978 agree that, from the original photomicrograph, Imbatoinium has an intercalary archaeopyle, and is a synonym of Pareodinia efl. 1947. Davey 1982 argues that I.kondratjevii has a distinct paracingulum, contrary to Pareodinia, and that the archaeopyle is subject to discussion. Dörhöfer and Davies 1980 emended Imbatodinium and assigned it a 4A2I archaeopyle, and synonymized it with both Batioladinium and Necrobroomea. Below`s 1990 material shows that I.kondratjevii and Pareodinia have an intercalary archaeopyle: 1a[s]+2a[s].
Below`s 1990 conclusions:
- Necrobroomea with its apical archaeopyle is valid
- Necrobroomea has priority over Batioladinium (jr. synonym)
- Necrobroomea is synonymous to Aprobolocysta, being a cavate form of Necrobroomea
- Necrobroomea is synonymus to Mehrota and Sarjeant`s 1984 emendation of Imbatodinium, which disregards the holotype of I.kondratjevii (discussion in Lentin and Williams 1985).
[Necrobroomea, Wiggins, 1975, p. 111; Emendation: Below, 1990, p. 52-53
Tax. jr. syn. of Imbatodinium Vozzhennikova, 1967, according to Dörhöfer and Davies, 1980, and Below, 1990. Lentin and Williams, 1993, followed Lentin and Vozzhennikova`s 1990 emendation of Imbatodinium, and retained it as a separate genus.
Tax. sr. syn. of Aprobolocysta Duxbury, 1977, according to Below, 1990. Lentin and Willimas, 1993, followed Pourtoy's 1988 emendation of Aprobolocysta and retained it as a separate genus.
Type species: originally as Broomea? longicornuta, Alberti, 1961 (pl.5, fig.19)] ; Necrobroomea longicornuta, Wiggins, 1975; emend. Below, 1990
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Wiggins, 1975]:
Diagnosis:
Proximate fossil cyst, ambitus ovoidal to elongate ovoidal, with one apical and two antapical horns. Cyst wall single layered. Archaeopyle apical, and archaeopyle suture irregular, closer to the apex dorsally, and expressing a distinct sulcal notch ventrally. operculum simple and free. Cyst wall ornamentation variable.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Emendation:
Below, 1990: (Translation: LPP):
For species with an appearance similar of Necrobroomea Wiggins 1975, emend. Below 1990, the following genera have been erected in literature:
- Imbatodinim Vozzhennikova 1967, emend. Dörhöfer and Davies 1980
- Necrobroomea Wiggins 1975
- Batioladinium Brideaux 1975
- Aprobolocysta Duxbury 1977, emend. Duxbury 1980
Necrobroomea (publ. 25-4-1975) has priority over Batioladinium (publ. 15-6-1975).
The position of Imbatodinium has been unclear. Vozzhennikova 1967 describes for Imbatodinium, with type-species I.kondratjevii, an apical archaeopyle. Wiggins 1975, Lentin & Williams 1977 and Stover & Evitt 1978 agree that, from the original photomicrograph, Imbatoinium has an intercalary archaeopyle, and is a synonym of Pareodinia efl. 1947. Davey 1982 argues that I.kondratjevii has a distinct paracingulum, contrary to Pareodinia, and that the archaeopyle is subject to discussion. Dörhöfer and Davies 1980 emended Imbatodinium and assigned it a 4A2I archaeopyle, and synonymized it with both Batioladinium and Necrobroomea. Below`s 1990 material shows that I.kondratjevii and Pareodinia have an intercalary archaeopyle: 1a[s]+2a[s].
Below`s 1990 conclusions:
- Necrobroomea with its apical archaeopyle is valid
- Necrobroomea has priority over Batioladinium (jr. synonym)
- Necrobroomea is synonymous to Aprobolocysta, being a cavate form of Necrobroomea
- Necrobroomea is synonymus to Mehrota and Sarjeant`s 1984 emendation of Imbatodinium, which disregards the holotype of I.kondratjevii (discussion in Lentin and Williams 1985).