Longing Gap Radiolarians, K 20-1 (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• coordinate based on unpublished field data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: Longing Member (Ameghino Formation), Early/Lower 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 46962: 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 lowercoonensis Pessagno et al. 1993 radiolarian
ssp. polaris, Author = Kiessling, n.ssp.
? Emiluvia aff. pessagnoi Foreman 1973 radiolarian
Author = Foreman
Emiluvia chica Foreman 1973 radiolarian
Author = Foreman
Emiluvia aff. parvinodosa Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Spumellaria -
Spongiomma "sp. B" Haeckel 1887 radiolarian
Spongiomma "sp. D" Haeckel 1887 radiolarian
Spongiomma "sp. E" Haeckel 1887 radiolarian
 Spumellaria - Pyramispongiidae
? Pyramispongia "sp. A" Pessagno 1973 radiolarian
 Spumellaria - Spongodiscidae
Spongotripus aff. pujanai Kiessling 1999 radiolarian
Stylospongia aff. longispina radiolarian
Author = (Rüst)
Spongodiscus "sp. A" Ehrenberg 1854 radiolarian
Spongodiscus "sp. B" Ehrenberg 1854 radiolarian
Teichertus hypnoticus Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Spumellaria - Tritrabidae
Neoparonaella delicata Yang 1993 radiolarian
Author = Yang
 Spumellaria -
 Spumellaria - Hagiastridae
Crucella magna Blome 1984 radiolarian
Author = (Blome)
Crucella mexicana Yang 1993 radiolarian
Author = Yang
? Higumastra "sp. D" Baumgartner 1980 radiolarian
Higumastra devilsgapensis Pessagno et al. 1993 radiolarian
Author = Pessagno, Blome and Hull
 Spumellaria - Parvivaccidae
Acastea diaphorogona Foreman 1973 radiolarian
Author = (Foreman)
Acaeniotyle parva Yang 1993 radiolarian
Author = Yang
 Spumellaria - Praeconocaryommidae
Praeconocaryomma "sp. C" Pessagno 1976 radiolarian
? Praeconocaryomma "sp. G" Pessagno 1976 radiolarian
 Spumellaria - Pantanelliidae
Pantanellium whalenae Pessagno and MacLeod 1987 radiolarian
Author = Pessagno and MacLeod
Pantanellium formosum Yang 1993 radiolarian
Author = Pessagno
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 rarum Hull 1997 radiolarian
Author = Hull
Gorgansium steigeri Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Gorgansium aff. morganense Pessagno and Blome 1980 radiolarian
Author = Pessagno and Blome
"Cantalum" "sp. A" Pessagno et al. 1979 radiolarian
Vallupus hopsoni Pessagno and Blome 1984 radiolarian
Author = Pessagno and Blome
Protovallupus excellens Yang and Pessagno 1989 radiolarian
Author = Yang and Pessagno
Protovallupus difficilis Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Spumellaria - Stylosphaeridae
Spongostylus "sp. B" Haeckel 1881 radiolarian
 Spumellaria - Orbiculiformidae
"Orbiculiforma teres" = Orbiculiformella teres Hull 1997 radiolarian
Author = Hull
Spongostaurus "sp. B" Haeckel 1882 radiolarian
Spongostaurus australis n. sp. Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Orbiculiforma "sp. A" Pessagno 1973 radiolarian
Orbiculiforma "sp. B" Pessagno 1973 radiolarian
Orbiculiforma cf. iniqua Blome 1984 radiolarian
Author = Blome
Orbiculiforma cf. vacaensis Pessagno 1973 radiolarian
Author = Pessagno
Orbiculiforma mclaughlini Pessagno 1977 radiolarian
Author = Pessagno
 Spumellaria - Pseudoaulophacidae
? Alievium "sp. C" Pessagno 1972 radiolarian
 Spumellaria -
Pseudoacanthosphaera "sp. A" O'Dogherty 1994 radiolarian
 Spumellaria - Angulobracchiidae
Angulobracchia purisimaensis Pessagno 1977 radiolarian
Author = (Pessagno)
Angulobracchia cf. biordinalis Ozvoldova 1984 radiolarian
Author = Ozvoldova
Paronaella "sp. A" Pessagno 1971 radiolarian
Paronaella "sp. B" Pessagno 1971 radiolarian
Paronaella aff. multifera Yang 1993 radiolarian
Author = Yang
Paronaella aff. pristidentata Baumgartner 1980 radiolarian
Author = Baumgartner
Paronaella bandyi Pessagno 1977 radiolarian
Author = Pessagno
Paronaella coalescenda Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Paronaella obesa Pessagno 1977 radiolarian
Author = (Pessagno)
 Spumellaria - Archaeospongoprunidae
Archaeospongoprunum aff. bipartitum Pessagno 1973 radiolarian
Author = Pessagno
 Spumellaria - Patulibracchiidae
Homoeoparonaella aff. gigantea Baumgartner 1980 radiolarian
Author = Baumgartner [entered as Homoeoparonaella giganthea]
Homoeoparonaella elegans Pessagno 1977 radiolarian
s.s., Author = (Pessagno) and ssp. yangi, Author = Kiessling, n.ssp.
 Radiolaria - Actinommidae
Actinomma "sp. A" Haeckel 1862 radiolarian
Actinomma "sp. B" Haeckel 1862 radiolarian
Actinomma interessanta Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Actinomma frigida Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Actinomma longinggapensis Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Actinomma verwirra Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Acanthosphaera "sp. B" Ehrenberg 1859 radiolarian
 Actinommacea - Xiphostylidae
Tripocyclia crassa n. sp. Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Suna "sp. A" Wu 1986 radiolarian
Suna echiodes Foreman 1973 radiolarian
ssp. concava, Author = Kiessling, n.ssp.
Triactoma tithonianum Rüst 1885 radiolarian
Author = Rüst
Archaeocenosphaera cf. laseekensis Pessagno et al. 1989 radiolarian
Author = Pessagno and Yang
 Nassellaria - Syringocapsidae
Podocapsa "amphitreptera" Foreman 1973 radiolarian
Author = Foreman
Podocapsa amphitreptera Foreman 1973 radiolarian
ssp. foremanae, Author = Yang
Podobursa aff. triacantha Fischli 1916 radiolarian
Author = (Fischli)
Podobursa aff. tricola Foreman 1973 radiolarian
Author = Foreman
 Nassellaria - Parvicingulidae
Caneta hsui Pessagno 1977 radiolarian
Author = (Pessagno)
Tethysetta boesii Parona 1890 radiolarian
Author = (Parona)
Parvicingula "sp. E" Pessagno 1977 radiolarian
Parvicingula aff. excelsa Pessagno and Blome 1984 radiolarian
Author = Pessagno and Blome
Parvicingula colemani Pessagno and Blome 1984 radiolarian
Author = Pessagno and Blome
Parvicingula aff. colemani Pessagno and Blome 1984 radiolarian
Author = Pessagno and Blome
Parvicingula cf. elegans Pessagno and Whalen 1982 radiolarian
Author = Pessagno and Whalen
Parvicingula cf. blowi Pessagno 1977 radiolarian
Author = Pessagno
Parvicingula judae Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Parvicingula cf. thomesensis Pessagno 1977 radiolarian
Author = Pessagno
Parvicingula turrita Rüst 1898 radiolarian
Author = (Rüst)
Parvicingula aff. turrita Rüst 1898 radiolarian
Author = (Rüst)
Praeparvicingula "sp. A" Pessagno et al. 1993 radiolarian
Praeparvicingula "sp. B" Pessagno et al. 1993 radiolarian
Praeparvicingula vera Pessagno and Whalen 1982 radiolarian
Author = (Pessagno and Whalen)
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 - Hsuidae
Hsuum "sp. A" Pessagno 1977 radiolarian
Hsuum cf. cuestaense Pessagno 1977 radiolarian
Author = Pessagno
Hsuum mclaughlini Pessagno and Blome 1984 radiolarian
Author = Pessagno and Blome
Hsuum tamanense Yang 1993 radiolarian
Author = Yang
 Nassellaria - Bagotidae
Droltus aff. laseekensis Pessagno and Whalen 1982 radiolarian
Author = Pessagno and Whalen
 Nassellaria - Ultranaporidae
Napora pacifica n. sp. Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Napora pualensis Blome 1984 radiolarian
Author = (Blome)
Napora aff. pyramidalis Baumgartner 1984 radiolarian
Author = Baumgartner
Napora durhami Pessagno 1977 radiolarian
Author = (Pessagno)
 Nassellaria - Eucyrtiidae
Tetracapsa molengraaffi Tan Sin Hok 1927 radiolarian
Author = (Tan Sin Hok)
Tetracapsa horokanaiensis Kawabata 1988 radiolarian
Author = (Kawabata)
 Nassellaria - Pseudodictyomitridae
Loopus primitivus Matsuoka and Yao 1985 radiolarian
Author = (Matsuoka and Yao)
 Nassellaria - Eucyrtidiidae
Stichomitra "sp. B" Cayeux 1897 radiolarian
Stichomitra "sp. C" Cayeux 1897 radiolarian
? Stichocapsa "sp. A" Haeckel 1881 radiolarian
Pseudoeucyrtis "sp. B" Pessagno 1977 radiolarian
Pseudoeucyrtis "sp. C" Pessagno 1977 radiolarian
 Nassellaria - Williriedellidae
? Tricolocapsa aff. campana Kiessling 1995 radiolarian
Author = Kiessling
Williriedellum frequens Tan Sin Hok 1927 radiolarian
Author = (Tan Sin Hok)
Zhamoidellum "sp. A" Dumitrica 1970 radiolarian
Zhamoidellum "sp. B" Dumitrica 1970 radiolarian
 Nassellaria - Tripedurnulidae
? Tridentocyrtis "sp. A" Steiger and Steiger 1994 radiolarian
Pseudopoulpus "sp. B" Takemura 1986 radiolarian
Pseudopoulpus spinosus Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Entactinaria - Hexastylidae
? Hexastylus grahamensis Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Entactinaria - Eptingiidae
Perispyridium serratum Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Perispyridium trifolium Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Entactinaria - Centrocubidae
? Octodendron superfragilis Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
? Octodendron cf. superfragilis Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
 Entactinaria - Saturnalidae
Acanthocircus yaoi Yang 1993 radiolarian
Author = Yang
Acanthocircus dumitricai Kiessling 1999 radiolarian
Author = Kiessling, n.sp.
Acanthocircus cf. minimus Squinabol 1914 radiolarian
Author = (Squinabol)