Longing Gap Radiolarians, K 14-1 (Jurassic of Antarctica)

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

• coordinate based on unpublished field data

• 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, 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 46961: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 27.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Protozoa
 Spumellaria - Emiluviidae
? Emiluvia "sp. A" Foreman 1973 radiolarian
? Emiluvia aff. pessagnoi Foreman 1973 radiolarian
Author = Foreman
Emiluvia aff. parvinodosa Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Spumellaria -
Spongiomma "sp. A" Haeckel 1887 radiolarian
Spongiomma "sp. B" Haeckel 1887 radiolarian
? Spongiomma "sp. C" Haeckel 1887 radiolarian
Spongiomma "sp. E" Haeckel 1887 radiolarian
 Spumellaria - Spongodiscidae
Spongotripus pujanai Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Spongodiscus "sp. A" Ehrenberg 1854 radiolarian
Spongodiscus "sp. B" Ehrenberg 1854 radiolarian
Teichertus hypnoticus Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Spumellaria - Sponguridae
Spongurus "sp. A" Haeckel 1860 radiolarian
 Spumellaria - Tritrabidae
Neoparonaella "delicata" Yang 1993 radiolarian
Author = Yang
? Tritrabs aff. casmaliaensis Pessagno 1977 radiolarian
Author = (Pessagno)
 Spumellaria -
 Spumellaria - Hagiastridae
Crucella theokaftensis Baumgartner 1980 radiolarian
Author = Baumgartner
Crucella magna Blome 1984 radiolarian
Author = (Blome)
Higumastra scassoi Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Higumastra devilsgapensis Pessagno et al. 1993 radiolarian
Author = Pessagno, Blome and Hull
 Spumellaria - Parvivaccidae
Tappanella novacubica radiolarian
Spelled Tappanella novacubica
Acastea diaphorogona Foreman 1973 radiolarian
Author = (Foreman)
Acastea bipes Yang 1993 radiolarian
Author = Yang
Acaeniotyle parva Yang 1993 radiolarian
Author = Yang
 Spumellaria - Praeconocaryommidae
? Praeconocaryomma "sp. D" Pessagno 1976 radiolarian
Praeconocaryomma scatebra Hull 1997 radiolarian
Author = Hull
Praeconocaryomma hexagona Rüst 1898 radiolarian
Author = (Rüst)
 Spumellaria - Pantanelliidae
Pantanellium whalenae Pessagno and MacLeod 1987 radiolarian
Author = Pessagno and MacLeod
Pantanellium formosum Yang 1993 radiolarian
Author = Pessagno
Pantanellium aff. formosum Yang 1993 radiolarian
Author = Yang
Pantanellium cantuchapai 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
Pantanellium meraceibaense Pessagno and MacLeod 1987 radiolarian
Author = Pessagno and MacLeod
Pantanellium aff. parvulum Pessagno and MacLeod 1987 radiolarian
Author = Pessagno and MacLeod
Protovallupus tetlamaensis Pessagno and MacLeod 1987 radiolarian
Author = Pessagno and MacLeod
 Spumellaria - Stylosphaeridae
Spongostylus "sp. B" Haeckel 1881 radiolarian
Staurolonche "sp. A" Haeckel 1881 radiolarian
 Spumellaria - Orbiculiformidae
"Orbiculiforma teres" = Orbiculiformella teres Hull 1997 radiolarian
Author = Hull
Spongostaurus australis Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Orbiculiforma "sp. A" Pessagno 1973 radiolarian
Orbiculiforma "mclaughlini" Pessagno 1977 radiolarian
Author = Pessagno
 Spumellaria - Pseudoaulophacidae
Alievium "sp. A" Pessagno 1972 radiolarian
 Spumellaria - Angulobracchiidae
? Protopsium "sp. A" Pessagno and Poisson 1981 radiolarian
Protopsium posinos De Wever 1981 radiolarian
Author = De Wever
Paronaella "sp. A" Pessagno 1971 radiolarian
Paronaella aff. cava Ozvoldova 1990 radiolarian
Author = (Ozvoldova)
Paronaella aff. solanoensis Pessagno 1971 radiolarian
Author = Pessagno
Paronaella venusta Blome 1984 radiolarian
Author = Blome
 Spumellaria - Heliodiscidae
? Heliodiscus "sp. B" Haeckel 1862 radiolarian
 Radiolaria - Actinommidae
Actinomma "sp. A" Haeckel 1862 radiolarian
Actinomma interessanta Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Actinomma verwirra Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Staurosphaera antiqua Rüst 1885 radiolarian
Author = Rüst
 Actinommacea - Xiphostylidae
Tripocyclia crassa Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Triactoma aff. jonesi Pessagno 1977 radiolarian
Author = (Pessagno)
Triactoma paramexicana Pessagno and Yang 1989 radiolarian
Author = Pessagno and Yang
Archaeocenosphaera cf. laseekensis Pessagno et al. 1989 radiolarian
Author = Pessagno and Yang
 Nassellaria - Eucyrtidiellidae
? Eucyrtidiellum "sp. C" Baumgartner 1984 radiolarian
 Nassellaria - Parvicingulidae
Caneta "sp. A" Pessagno et al. 1993 radiolarian
Caneta hsui Pessagno 1977 radiolarian
Author = (Pessagno)
Tethysetta boesii Parona 1890 radiolarian
Author = (Parona)
Parvicingula aff. colemani Pessagno and Blome 1984 radiolarian
Author = Pessagno and Blome
Parvicingula judae Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Praeparvicingula "sp. A" Pessagno et al. 1993 radiolarian
Praeparvicingula "sp. B" Pessagno et al. 1993 radiolarian
? Praeparvicingula "sp. E" Pessagno et al. 1993 radiolarian
Praeparvicingula communis Blome 1984 radiolarian
Author = (Blome)
Praeparvicingula blomei Yang 1993 radiolarian
Author = (Yang)
"Praecaneta discors" = Praeparvicingula discors Yang 1993 radiolarian
Author = (Yang)
Praeparvicingula gemmata Hull 1995 radiolarian
Author = Hull
Praeparvicingula holdsworthi Yang 1993 radiolarian
Author = (Yang)
Praeparvicingula rotunda Hull 1995 radiolarian
Author = Hull
Praeparvicingula aff. rotunda Hull 1995 radiolarian
Author = Hull
"Parvicingula aff. grantensis" = Praeparvicingula grantensis Pessagno and Whalen 1982 radiolarian
Author = (Pessagno and Whalen)
 Nassellaria -
? Windalia "sp. E" Ellis 1993 radiolarian
 Nassellaria - Archaeodictyomitridae
? Archaeodictyomitra sixi Yang 1993 radiolarian
Author = Yang
Archaeodictyomitra exigua Blome 1984 radiolarian
Author = Blome
 Nassellaria - Hsuidae
Hsuum cf. cuestaense Pessagno 1977 radiolarian
Author = Pessagno
Hsuum mclaughlini Pessagno and Blome 1984 radiolarian
Author = Pessagno and Blome
 Nassellaria - Ultranaporidae
? Napora "sp. C" Pessagno 1977 radiolarian
Napora pualensis Blome 1984 radiolarian
Author = (Blome)
Napora aff. pyramidalis Baumgartner 1984 radiolarian
Author = Baumgartner
Napora aff. bukryi Pessagno 1977 radiolarian
Author = Pessagno
 Nassellaria - Eucyrtidiidae
Stichomitra "sp. D" Cayeux 1897 radiolarian
Stichomitra cf. pseudacerra Tan Sin Hok 1927 radiolarian
Author = (Tan Sin Hok)
? Solenotryma "sp. A" Foreman 1968 radiolarian
 Entactinaria - Eptingiidae
Perispyridium trifolium Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Entactinaria - Centrocubidae
? Octodendron "sp. B" Haeckel 1887 radiolarian
 Entactinaria - Saturnalidae
Acanthocircus cf. minimus Squinabol 1914 radiolarian
Author = (Squinabol)
Acanthocircus preclarus Foreman 1975 radiolarian
Author = (Foreman)