PBDB Collection

Longing Gap Radiolarians, K 47 (Jurassic of Antarctica)

Where: Antarctica (64.5° S, 59.0° W: paleocoordinates 54.9° S, 35.5° W)

• coordinate based on unpublished field data

• hand sample-level geographic resolution

When: Ameghino Member (Ameghino Formation), Late/Upper Tithonian (150.8 - 145.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified, concretionary, tuffaceous, black mudstone

• Anoxic conditions prevailed especially in the Longing Member; this is indicated by the often lacking bioturbation and rare horizons with benthonic fossils. In the Ameghino Member moderately intense bioturbation (Zoophycos, Chondrites, Planolites) and a consequent destruction of lamination indicate dysaerobic conditions. Doyle and Whitham (1991) attribute this environmental change to an uplift of the depositional environment above a permanent pyknocline. The submarine relief was very low and a simple hemipelagic sedimentation was dominant.

• Mudstone concretion with tuff layers

Size class: microfossils

Preservation: concretion

Collection methods: bulk, chemical, hydrochloric, sieve,

• Radiolarians only. Additional faunal elements are sponge spicules and very rare foraminifera.

Primary reference: W. Kiessling. 1999. Late Jurassic radiolarians from the Antarctic Peninsula. Micropaleontology 45(S1):1-96 [W. Kiessling/W. Kiessling]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 46969: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 27.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Spongiommatinae indet. Spongiommatinae indet.
Protozoa
Entactinaria - Hexastylidae	? Hexastylus "sp. A" ? Hexastylus "sp. A" Haeckel 1881 radiolarian
Entactinaria - Centrocubidae	? Octodendron "sp. B" ? Octodendron "sp. B" Haeckel 1887 radiolarian
Entactinaria - Saturnalidae	Acanthocircus euganeus, Acanthocircus "yaoi" Acanthocircus euganeus Squinabol 1914 radiolarian Author = (Squinabol) Acanthocircus "yaoi" Yang 1993 radiolarian Author = Yang
Actinommacea - Xiphostylidae	Tripocyclia triacuminata, Tripocyclia crassa, Triactoma tithonianum Tripocyclia triacuminata radiolarian Author = (Lipman) Tripocyclia crassa Kiessling 1999 radiolarian Author = Kiessling, n.sp. Triactoma tithonianum Rüst 1885 radiolarian Author = Rüst
Nassellaria - Eucyrtiidae	Tetracapsa aff. cometa, Tetracapsa molengraaffi Tetracapsa aff. cometa radiolarian Author = (Pantanelli) Tetracapsa molengraaffi Tan Sin Hok 1927 radiolarian Author = (Tan Sin Hok)
Nassellaria - Eucyrtidiidae	Stichocapsa singularis, Stichomitra "sp. B", Stichomitra "sp. C", Stichomitra cf. pseudacerra, Pseudoeucyrtis "sp. A", Pseudoeucyrtis "sp. B", Pseudoeucyrtis "sp. C" Stichocapsa singularis Tan Sin Hok 1927 radiolarian Author = Tan Sin Hok Stichomitra "sp. B" Cayeux 1897 radiolarian Stichomitra "sp. C" Cayeux 1897 radiolarian Stichomitra cf. pseudacerra Tan Sin Hok 1927 radiolarian Author = (Tan Sin Hok) Pseudoeucyrtis "sp. A" Pessagno 1977 radiolarian Pseudoeucyrtis "sp. B" Pessagno 1977 radiolarian Pseudoeucyrtis "sp. C" Pessagno 1977 radiolarian
Nassellaria - Sethocapsidae	? Stylocapsa "sp. A", Arcanicapsa tripes, Arcanicapsa aff. adrianae ? Stylocapsa "sp. A" Principi 1909 radiolarian Arcanicapsa tripes radiolarian Author = (Yang) Arcanicapsa aff. adrianae Jud 1994 radiolarian Author = (Jud)
Nassellaria - Acropyramididae	Cornutella "sp. A", Cornutella "sp. B" Cornutella "sp. A" Ehrenberg 1838 radiolarian Cornutella "sp. B" Ehrenberg 1838 radiolarian
Nassellaria - Spongocapsulidae	? Spongocapsula "sp. E" ? Spongocapsula "sp. E" Pessagno 1977 radiolarian
Nassellaria - Parvicingulidae	Darvelus "primus", Tethysetta boesii, Parvicingula "sp. F", Parvicingula colemani, Parvicingula judae, Parvicingula excelsa, Parvicingula satura, Parvicingula turrita, Praeparvicingula "sp. B", Praeparvicingula holdsworthi, "Parvicingula aff. grantensis" = Praeparvicingula grantensis, Praeparvicingula vera, Praeparvicingula aff. rotunda Darvelus "primus" Hull 1995 radiolarian Author = Hull Tethysetta boesii Parona 1890 radiolarian Author = (Parona) Parvicingula "sp. F" Pessagno 1977 radiolarian Parvicingula colemani Pessagno and Blome 1984 radiolarian Author = Pessagno and Blome Parvicingula judae Kiessling 1999 radiolarian Author = Kiessling, n.sp. Parvicingula excelsa Pessagno and Blome 1984 radiolarian Author = Pessagno and Blome Parvicingula satura Hull 1995 radiolarian Author = Hull Parvicingula turrita Rüst 1898 radiolarian Author = (Rüst) Praeparvicingula "sp. B" Pessagno et al. 1993 radiolarian Praeparvicingula holdsworthi Yang 1993 radiolarian Author = (Yang) "Parvicingula aff. grantensis" = Praeparvicingula grantensis Pessagno and Whalen 1982 radiolarian Author = (Pessagno and Whalen) Praeparvicingula vera Pessagno and Whalen 1982 radiolarian Author = (Pessagno and Whalen) Praeparvicingula aff. rotunda Hull 1995 radiolarian Author = Hull
Nassellaria - Williriedellidae	Zhamoidellum "sp. B", Williriedellum frequens Zhamoidellum "sp. B" Dumitrica 1970 radiolarian Williriedellum frequens Tan Sin Hok 1927 radiolarian Author = (Tan Sin Hok)
Nassellaria - Archaeodictyomitridae	Mita weddellensis Mita weddellensis Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Nassellaria - Bagotidae	Droltus aff. laseekensis Droltus aff. laseekensis Pessagno and Whalen 1982 radiolarian Author = Pessagno and Whalen
Nassellaria - Ultranaporidae	Napora pualensis, Napora aff. pyramidalis, Napora irregularis Napora pualensis Blome 1984 radiolarian Author = (Blome) Napora aff. pyramidalis Baumgartner 1984 radiolarian Author = Baumgartner Napora irregularis Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Nassellaria -	? Windalia "sp. A", ? Windalia "sp. C", ? Windalia "sp. D" ? Windalia "sp. A" Ellis 1993 radiolarian ? Windalia "sp. C" Ellis 1993 radiolarian ? Windalia "sp. D" Ellis 1993 radiolarian
Spumellaria - Pantanelliidae	Pantanellium whalenae, Pantanellium aff. formosum, Pantanellium ranchitoense Pantanellium whalenae Pessagno and MacLeod 1987 radiolarian Author = Pessagno and MacLeod Pantanellium aff. formosum Yang 1993 radiolarian Author = Yang Pantanellium ranchitoense Pessagno and MacLeod 1987 radiolarian Author = Pessagno and MacLeod
Spumellaria - Archaeospongoprunidae	Archaeospongoprunum aff. helense Archaeospongoprunum aff. helense Blome 1984 radiolarian Author = Blome
Spumellaria - Hagiastridae	Crucella mexicana Crucella mexicana Yang 1993 radiolarian Author = Yang
Spumellaria - Tritrabidae	Neoparonaella "delicata" Neoparonaella "delicata" Yang 1993 radiolarian Author = Yang
Spumellaria -	Plegmosphaera "sp. A", Plegmosphaera "sp. D" Plegmosphaera "sp. A" radiolarian Plegmosphaera "sp. D" radiolarian
Spumellaria - Parvivaccidae	Acastea minispinea, Acaeniotyle parva Acastea minispinea Yang 1993 radiolarian Author = Yang Acaeniotyle parva Yang 1993 radiolarian Author = Yang
Spumellaria - Spongodiscidae	Spongotripus pujanai, Stylospongia aff. polygonata, Spongodiscus "sp. B" Spongotripus pujanai Kiessling 1999 radiolarian Author = Kiessling, n.sp. Stylospongia aff. polygonata radiolarian Author = (Campbell and Clark) Spongodiscus "sp. B" Ehrenberg 1854 radiolarian
Spumellaria - Heliodiscidae	? Heliodiscus "sp. B" ? Heliodiscus "sp. B" Haeckel 1862 radiolarian
Spumellaria - Stylosphaeridae	Spongostylus "sp. B" Spongostylus "sp. B" Haeckel 1881 radiolarian
Spumellaria - Orbiculiformidae	Orbiculiforma "sp. A", ? Orbiculiforma hullae, Spongostaurus australis Orbiculiforma "sp. A" Pessagno 1973 radiolarian ? Orbiculiforma hullae Kiessling 1999 radiolarian Author = Kiessling, n.sp. Spongostaurus australis Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Spumellaria -	Pseudoacanthosphaera "sp. A", Pseudoacanthosphaera "sp. B" Pseudoacanthosphaera "sp. A" O'Dogherty 1994 radiolarian Pseudoacanthosphaera "sp. B" O'Dogherty 1994 radiolarian
Spumellaria - Emiluviidae	? Emiluvia aff. pessagnoi, Emiluvia parvinodosa, Emiluvia aff. parvinodosa ? Emiluvia aff. pessagnoi Foreman 1973 radiolarian Author = Foreman Emiluvia parvinodosa Kiessling 1999 radiolarian Author = Kiessling, n.sp. Emiluvia aff. parvinodosa Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Spumellaria - Angulobracchiidae	Paronaella aff. cava Paronaella aff. cava Ozvoldova 1990 radiolarian Author = (Ozvoldova)