PBDB Collection

Longing Gap Radiolarians, K 8-1 (Jurassic of Antarctica)

Where: Antarctic Peninsula, Antarctica (64.5° S, 59.0° W: paleocoordinates 55.0° S, 33.2° W)

• hand sample-level geographic resolution

When: Longing Member (Ameghino Formation), Late/Upper Kimmeridgian (155.7 - 150.8 Ma)

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified, concretionary, 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, replaced with other

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 9956: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 26.03.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Protozoa
Actinommacea - Xiphostylidae	Tripocyclia triacuminata, Tripocyclia crassa, Triactoma mexicana, Archaeocenosphaera gregaria Tripocyclia triacuminata radiolarian Author = (Lipman) Tripocyclia crassa Kiessling 1999 radiolarian Author = Kiessling, n.sp. Triactoma mexicana Pessagno et al. 1989 radiolarian Author = Pessagno and Yang Archaeocenosphaera gregaria Rüst 1885 radiolarian misspelled as Archaecenosphaera gregaria
Nassellaria - Poulpidae	Saitoum pagei Saitoum pagei Pessagno 1977 radiolarian Author = Pessagno
Nassellaria - Hsuidae	Hsuum tamanense, Hsuum cf. cuestaense Hsuum tamanense Yang 1993 radiolarian Author = Yang Hsuum cf. cuestaense Pessagno 1977 radiolarian Author = Pessagno
Nassellaria - Archaeodictyomitridae	Archaeodictyomitra shengi, Archaeodictyomitra minoensis, Archaeodictyomitra exigua, Mita "sp. A", Mita weddellensis Archaeodictyomitra shengi Yang 1993 radiolarian Author = Yang Archaeodictyomitra minoensis Mizutani 1981 radiolarian Author = (Mizutani) Archaeodictyomitra exigua Blome 1984 radiolarian Author = Blome Mita "sp. A" Pessagno 1977 radiolarian Mita weddellensis Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Nassellaria - Parvicingulidae	Caneta "sp. A", Caneta hsui, Tethysetta boesii, Praeparvicingula "sp. B", Praeparvicingula communis, "Praecaneta discors" = Praeparvicingula discors, Praeparvicingula rotunda, Praeparvicingula aff. rotunda, Parvicingula yehae, Parvicingula colemani, Parvicingula jonesi, Parvicingula excelsa Caneta "sp. A" Pessagno et al. 1993 radiolarian Caneta hsui Pessagno 1977 radiolarian Author = (Pessagno) Tethysetta boesii Parona 1890 radiolarian Author = (Parona) Praeparvicingula "sp. B" Pessagno et al. 1993 radiolarian Praeparvicingula communis Blome 1984 radiolarian Author = (Blome) "Praecaneta discors" = Praeparvicingula discors Yang 1993 radiolarian Author = (Yang) Praeparvicingula rotunda Hull 1995 radiolarian Author = Hull Praeparvicingula aff. rotunda Hull 1995 radiolarian Author = Hull Parvicingula yehae Yang 1993 radiolarian Author = Yang Parvicingula colemani Pessagno and Blome 1984 radiolarian Author = Pessagno and Blome Parvicingula jonesi Pessagno 1977 radiolarian Author = Pessagno Parvicingula excelsa Pessagno and Blome 1984 radiolarian Author = Pessagno and Blome
Nassellaria - Eucyrtidiidae	? Solenotryma "sp. A", Stichomitra "sp. A", Stichomitra "sp. B", Stichomitra "sp. C" ? Solenotryma "sp. A" Foreman 1968 radiolarian Stichomitra "sp. A" Cayeux 1897 radiolarian Stichomitra "sp. B" Cayeux 1897 radiolarian Stichomitra "sp. C" Cayeux 1897 radiolarian
Nassellaria - Eucyrtiidae	Tetracapsa horokanaiensis, Tetracapsa molengraaffi Tetracapsa horokanaiensis Kawabata 1988 radiolarian Author = (Kawabata) Tetracapsa molengraaffi Tan Sin Hok 1927 radiolarian Author = (Tan Sin Hok)
Nassellaria - Ultranaporidae	"Napora "sp. B"" = Napora, "? Jacus "sp. A"" = Napora, Napora bukryi, Napora aff. bukryi, Napora aff. pyramidalis "Napora "sp. B"" = Napora Pessagno 1977 radiolarian "? Jacus "sp. A"" = Napora Pessagno 1977 radiolarian Napora bukryi Pessagno 1977 radiolarian Author = Pessagno Napora aff. bukryi Pessagno 1977 radiolarian Author = Pessagno Napora aff. pyramidalis Baumgartner 1984 radiolarian Author = Baumgartner
Nassellaria - Williriedellidae	Williriedellum frequens, ? Tricolocapsa "sp. A" Williriedellum frequens Tan Sin Hok 1927 radiolarian Author = (Tan Sin Hok) ? Tricolocapsa "sp. A" Haeckel 1881 radiolarian
Nassellaria -	? Windalia "sp. D" ? Windalia "sp. D" Ellis 1993 radiolarian
Entactinaria - Quinquecapsulariidae	Quinquecapsularia cf. megasphaerica Quinquecapsularia cf. megasphaerica radiolarian Author = Dumitrica & Baumgartner
Entactinaria - Saturnalidae	Acanthocircus dumitricai, Acanthocircus simplex, Acanthocircus yaoi Acanthocircus dumitricai Kiessling 1999 radiolarian Author = Kiessling, n.sp. Acanthocircus simplex Squinabol 1914 radiolarian Author = (Squinabol) Acanthocircus yaoi Yang 1993 radiolarian Author = Yang
Entactinaria - Eptingiidae	Perispyridium serratum, Perispyridium ordinarium, Perispyridium trifolium n. sp. Perispyridium serratum Kiessling 1999 radiolarian Author = Kiessling, n.sp. Perispyridium ordinarium Pessagno 1977 radiolarian Author = (Pessagno) Perispyridium trifolium n. sp. Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Spumellaria - Angulobracchiidae	Paronaella aff. solanoensis, Paronaella obesa Paronaella aff. solanoensis Pessagno 1971 radiolarian Author = Pessagno Paronaella obesa Pessagno 1977 radiolarian Author = (Pessagno)
Spumellaria - Emiluviidae	? Emiluvia "sp. A", ? Emiluvia "sp. B" ? Emiluvia "sp. A" Foreman 1973 radiolarian ? Emiluvia "sp. B" Foreman 1973 radiolarian
Spumellaria -	Plegmosphaera "sp. A", Plegmosphaera "sp. C" Plegmosphaera "sp. A" radiolarian Plegmosphaera "sp. C" radiolarian
Spumellaria - Spongodiscidae	Spongodiscus "sp. B", Teichertus hypnoticus Spongodiscus "sp. B" Ehrenberg 1854 radiolarian Teichertus hypnoticus Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Spumellaria - Pantanelliidae	Pantanellium rarum, Pantanellium formosum, Pantanellium oligoporum, Pantanellium whalenae, Pantanellium ranchitoense, Pantanellium quintachillaense, Gorgansium steigeri, Protovallupus "sp. A" Pantanellium rarum Hull 1997 radiolarian Author = Hull Pantanellium formosum Yang 1993 radiolarian Author = Pessagno Pantanellium oligoporum Vinassa de Regny 1899 radiolarian Author = Vinassa de Regny Pantanellium whalenae Pessagno and MacLeod 1987 radiolarian Author = Pessagno and MacLeod Pantanellium ranchitoense Pessagno and MacLeod 1987 radiolarian Author = Pessagno and MacLeod Pantanellium quintachillaense Pessagno and MacLeod 1987 radiolarian Author = Pessagno and MacLeod Gorgansium steigeri Kiessling 1999 radiolarian Author = Kiessling, n.sp. Protovallupus "sp. A" Pessagno and MacLeod 1987 radiolarian
Spumellaria - Pseudoaulophacidae	Alievium "sp. B" Alievium "sp. B" Pessagno 1972 radiolarian
Spumellaria - Tritrabidae	Neoparonaella delicata, Tritrabs exotica Neoparonaella delicata Yang 1993 radiolarian Author = Yang Tritrabs exotica Pessagno 1977 radiolarian Author = Pessagno
Spumellaria - Orbiculiformidae	Orbiculiforma "sp. A", ? Orbiculiforma hullae Orbiculiforma "sp. A" Pessagno 1973 radiolarian ? Orbiculiforma hullae Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Spumellaria - Praeconocaryommidae	Praeconocaryomma "sp. A", Praeconocaryomma "sp. C", Praeconocaryomma hexagona, ? Praeconocaryomma matsuokai n. sp. Praeconocaryomma "sp. A" Pessagno 1976 radiolarian Praeconocaryomma "sp. C" Pessagno 1976 radiolarian Praeconocaryomma hexagona Rüst 1898 radiolarian Author = (Rüst) ? Praeconocaryomma matsuokai n. sp. Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Spumellaria - Parvivaccidae	Acastea bipes, Acastea diaphorogona, Acastea minispinea, Acaeniotyle sp. Acastea bipes Yang 1993 radiolarian Author = Yang Acastea diaphorogona Foreman 1973 radiolarian Author = (Foreman) Acastea minispinea Yang 1993 radiolarian Author = Yang Acaeniotyle sp. Foreman 1973 radiolarian
Spumellaria - Hagiastridae	? Crucella "sp. A", Crucella mexicana, Crucella magna, Higumastra aff. spinosum, Higumastra cf. inflata, Higumastra devilsgapensis, Higumastra scassoi ? Crucella "sp. A" Pessagno 1971 radiolarian Crucella mexicana Yang 1993 radiolarian Author = Yang Crucella magna Blome 1984 radiolarian Author = (Blome) Higumastra aff. spinosum radiolarian Author = (Steiger) Higumastra cf. inflata Baumgartner 1980 radiolarian Author = Baumgartner Higumastra devilsgapensis Pessagno et al. 1993 radiolarian Author = Pessagno, Blome and Hull Higumastra scassoi Kiessling 1999 radiolarian Author = Kiessling, n.sp.
Radiolaria - Actinommidae	Actinomma "sp. A", Actinomma verwirra n. sp. Actinomma "sp. A" Haeckel 1862 radiolarian Actinomma verwirra n. sp. Kiessling 1999 radiolarian Author = Kiessling, n.sp.