Lachman Crags Member- Santa Marta Formation (Cretaceous to of Antarctica)

Where: Antarctica (63.9° S, 58.0° W: paleocoordinates 61.7° S, 68.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lachman Crags Member (Santa Marta Formation), Santonian to Santonian (86.3 - 72.1 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; lithified, muddy mudstone and lithified, silty siltstone

• It is interpreted as a sub-storm wave base, mid to outer shelf deposit (Pirrie 1989, Crame et al. 1991).
• Comprises interbedded sandstones, silt-stones, mudstones, accretionary lapilli, with rare conglomerates and coquinas and abundant early diagenetic concretions (Crame et al. 1991).

Size class: microfossils

• Other: Palynomorphs

Preservation: soft parts, original sporopollenin

Reposited in the BGS

Collection methods: bulk, chemical, hydrochloric, hydroflouric,

Primary reference: J. M. Keating. 1992. Palynology of the Lachman Crags Member, Santa Marta Formation (Upper Cretaceous) of north-west James Ross Island. Antartic Science 4(3):293-304 [C. Jaramillo/P. Santamarina]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 150509: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 09.09.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Isabelidiniurn acuminatum, Isabelidiniurn cf. belfastense, Isabelidiniurn glabrum, Forarninisporis dailyi
 Life -
Cymatiosphaera "spp.", Cyclopsiella "spp.", Micrhystridium "spp."
Cymatiosphaera "spp." Wetzel 1933 acritarchs
Cyclopsiella "spp." Drugg and Loeblich 1967 acritarchs
Micrhystridium "spp." Deflandre 1937 acritarchs
Prasinophytae
  -
Tasmanites "spp."
Tasmanites "spp." Newton 1875
Schizosporis reticulatus
  -
Schizosporis cf. reticulatus
Schizosporis cf. reticulatus Cookson and Dettmann 1959
Pteridopsida
  -
Cyathidites punctatus, Cyathidites australis, Cyathidites minor, Ischyosporites volkheimeri, Osmundacidites wellmannii
Cyathidites punctatus Delcourt et al. 1963
Cyathidites australis Couper 1953
Cyathidites minor Couper 1953
Foveogleicheniidites confossus
  -
Foveogleicheniidites confussus
Polypodiopsida
  - Gleicheniaceae
Gleicheniidites circinidites, Clavifera triplex
Clavifera triplex Bolkhovitina 1966
  - Dicksoniaceae
Trilites tuberculiformis, Cyatheacidites annulatus, Cyatheacidites archangelskii
 Schizaeales - Polypodiidae
Klukisporites scaberis
Klukisporites scaberis Dettmann 1963
  - Polypodiaceae
Laevigatosporites ovatus
Laevigatosporites ovatus Wilson and Webster 1946
  - Osmundaceae
Baculatisporites comaurnensis
  -
Biretisporites spectabilis
  - Blechnaceae
Leptolepidites verrucatus
 Coniferales - Podocarpaceae
Phyllocladidites mawsonii, Microcachryidites "sp.", Microcachryidites antarcticus, Dacrycarpites australiensis, Podosporites microsaccatus, Lygistepollenites balmei, Podocarpidites ellipticus
Phyllocladidites mawsonii Cookson 1947 podocarp
Microcachryidites "sp." Cookson 1947 podocarp
Microcachryidites antarcticus Couper 1953 podocarp
Dacrycarpites australiensis Cookson and Pike 1953 podocarp
Podosporites microsaccatus Dettmann 1963 podocarp
Lygistepollenites balmei Stover and Evans 1973 podocarp
Podocarpidites ellipticus Cookson 1947 podocarp
Angiospermae
 Chloranthales - Chloranthaceae
Clavatipollenites "spp."
 Mesangiosperms - Liliaceae
Liliacidites "spp."
Liliacidites "spp." Couper 1953
 Proteales -
Peninsulapollis "spp."
Peninsulapollis "spp." Dettmann and Jarzen 1988
 Proteales - Proteaceae
Proteacidites "spp."
Proteacidites "spp." Cookson and Couper 1953
 Fagales -
Nothofagidites "spp."
Nothofagidites "spp." Potonié 1960
Ginkgoopsida
 Caytoniales -
Vitreisporites pallidus
Equisetopsida
 Anthocerotidae - Anthocerotidae
Foraminisporis asymmetricus
 Pinidae - Pinidae
Araucariacites australis
 Cupressales - Pinidae
Inaperturopollenites "spp."
Bryopsida
  -
Stereisporites antiquasporites
Marchantiopsida
  - Marchantiidae
Triporoletes simplex
Triporoletes simplex Playford 1971
 Sphaerocarpales -
Aequitriradites spinulosus
Aequitriradites spinulosus Cookson and Dettmann 1958
Lycopodiopsida
 Selaginellales - Selaginellaceae
Neoraistrickia truncata
Neoraistrickia truncata Potonié 1956 spikemoss
 Selaginellales -
Densoisporites velatus, Ceratosporites equalis
Densoisporites velatus Dettmann 1963 clubmoss
Ceratosporites equalis Cookson and Dettmann 1958 clubmoss
 Lycopodiales -
Retitriletes austroclavatidites
Retitriletes austroclavatidites Döring et al. 1963 clubmoss
Alisporites
  -
Alisporites grandis, Alisporites similis
Alisporites grandis Dettmann 1963
Alisporites similis Dettmann 1963
Tunyosphaeridium isocalamus
  -
Tunyosphaeridium isocalamus
Tunyosphaeridium isocalamus Davey and Williams 1966
Perotriletes
  -
Perotriletes majus, Perotriletes laceratus
Australisphaera verrucosa
  -
Australisphaera verrucosa
Amphidiadema
  -
Amphidiadema rectangularis
Amphidiadema rectangularis Lentin and Williams 1976
Amphidiadema denticulata
  -
Amphidiadema denticulata
Amphidiadema denticulata Cookson and Eisenack 1960
 Dinoflagellata -
Canninginopsis "sp. I", Canninginopsis colliveri, Callaiosphaeridium asymrnetricum
Canninginopsis "sp. I" Cookson and Eisenack 1962
Canninginopsis colliveri Backhouse 1988
Callaiosphaeridium asymrnetricum Clarke and Verdier 1967
Dinophyceae
 Gonyaulacales - Cladopyxiaceae
Microdinium "sp."
Microdinium "sp." Cookson and Eisenack 1960
 Gonyaulacales - Ceratiaceae
Xenascus australensis, Odontochitina "sp. I", Odontochitina "sp. II", Odontochitina singhii, Odontochitina cribropoda, Odontochitina costata, Odontochitina operculata, Odontochitina porifera
Xenascus australensis Cookson and Eisenack 1969
Odontochitina "sp. I" Deflandre 1935
Odontochitina "sp. II" Deflandre 1935
Odontochitina singhii Morgan 1980
Odontochitina cribropoda Deflandre and Cookson 1955
Odontochitina costata Alberti 1961
Odontochitina operculata Deflandre 1935
Odontochitina porifera Cookson 1956
 Gonyaulacales -
Heslertonia striata
Heslertonia striata Eisenack and Cookson 1960
 Gonyaulacales - Goniodomaceae
Hystrichosphaeridium paracostatum
Hystrichosphaeridium paracostatum Cookson and Eisenack 1974
 Gonyaulacales - Gonyaulacaceae
Heterosphaeridium "sp.", Heterosphaeridium conjunctum, ? Heterosphaeridium heteracanthum, Heterosphaeridium dificile, ? Scriniodinium cf. ceratophorum, Cassiculosphaeridia "sp. I", Kiokansium polypes, Pterodinium cingulatum, Oligosphaeridium pulcherrimum, Oligosphaeridium complex, Cribroperidinium cooksoniae
Heterosphaeridium "sp." Cookson and Eisenack 1969
Heterosphaeridium conjunctum Cookson and Eisenack 1968
? Heterosphaeridium heteracanthum Eisennack and Kjellström 1972
? Scriniodinium cf. ceratophorum Cookson and Eisenack 1960
Kiokansium polypes Below 1982
Oligosphaeridium pulcherrimum Davey and Williams 1966
Oligosphaeridium complex Davey and Williams 1966
 Gonyaulacales -
Cleistosphaeridium armatum
 Gonyaulacales - Hystrichosphaeridiaceae
Conosphaeridium striatoconus
 Gonyaulacales - Areoligeraceae
Cyclonephelium compactum, Canningia "sp. I", Canningia scabrosa, Circulodinium distinctum
Cyclonephelium compactum Deflandre and Cookson 1955
Canningia "sp. I" Cookson and Eisenack 1960
Canningia scabrosa Cookson and Eisenack 1970
Circulodinium distinctum Jansonius 1986
subsp. distinctum & subsp. longispinatum
  -
Spiniferites ramosus, Xenikoon australis
Spiniferites ramosus Lentin and Williams 1973
Xenikoon australis Cookson and Eisenack 1960
 Ptychodiscales - Ptychodiscaceae
Dinogymnium nelsonense, Dinogymnium euclaense, Dinogymnium westralium
Dinogymnium nelsonense Evitt et al. 1967
Dinogymnium euclaense Cookson and Eisenack 1970
  -
Exochosphaeridium phragmites, Palaeotetradinium silicorum
 Peridiniales - Protoperidiniaceae
Lejeunecysta "sp."
Lejeunecysta "sp." Artzner and Dörhöfer 1978
 Peridiniales - Deflandreaceae
? Palaeocystodinium rhomboides, Spinidinium "spp.", Spinidinium echinoideum, Spinidinium lanterna
? Palaeocystodinium rhomboides Lentin and Williams 1973
Spinidinium "spp." Cookson and Eisenack 1962
Spinidinium echinoideum Lentin and Williams 1976
subsp. rhombicum
Spinidinium lanterna Cookson and Eisenack 1970
 Peridiniales - Peridiniaceae
? Manumiella cretacea, Manumiella lata, Eucladinium cf. madurense, Eucladinium cf. spinosissimum, Trithyrodinium vermiculaturn, Trithyrodinium suspectum, Alterbidinium minus, Chatangiella cf. multispinosa, Chatangiella serratula, Chatangiella tripartita, Hexagonifera glabra, Isabelidinium "spp.", Isabelidinium cooksoniae, Isabelidinium thomasii, Isabelidinium belfastense, Isabelidinium cf. microarmum, Palaeohystrichophora infusorioides, Maduradinium pentagonum, Maduradinium "sp. I", ? Subtilisphaera ventriosa
? Manumiella cretacea Bujak and Davies 1983
Manumiella lata Bujak and Davies 1983
Eucladinium cf. madurense Stover and Evitt 1978
Eucladinium cf. spinosissimum Stover and Evitt 1978
Alterbidinium minus Lentin and Williams 1985
Chatangiella cf. multispinosa Lentin and Williams 1976
Chatangiella serratula Lentin and Williams 1976
Chatangiella tripartita Lentin and Williams 1976
Hexagonifera glabra Cookson and Eisenack 1961
Isabelidinium "spp." Lentin and Williams 1977
Isabelidinium cooksoniae Lentin and Williams 1977
Isabelidinium thomasii Lentin and Williams 1976
Isabelidinium belfastense Lentin and Williams 1976
Isabelidinium cf. microarmum Lentin and Williams 1977
Maduradinium "sp. I" Cookson and Eisenak 1970
? Subtilisphaera ventriosa Jain and Millepied 1971
  -
Diconodinium pusillum, Prolixosphaeridium parvispinum, Prolixosphaeridium cf. inequiornatum, Tenua hystrix, Nelsoniella semireticulafa, Nelsoniella "sp. I", Nelsoniella tuberculata, Nelsoniella aceras
Prolixosphaeridium cf. inequiornatum Stover and Helby 1987
Tenua hystrix Eisenack 1958
Nelsoniella "sp. I" Cookson and Eisenack 1960
Nelsoniella tuberculata Cookson and Eisenack 1960
Nelsoniella aceras Cookson and Eisenack 1960
 Dinoflagellata -
Palambages "Form A", Palambages "Form C"
Palambages "Form A" Wetzel 1961
Palambages "Form C" Wetzel 1961