PBDB Collection

Puesto El Moro Creek - Rio Mayer Formation (Cretaceous to of Argentina)

Where: Santa Cruz, Argentina (49.1° S, 72.1° W)

• Paleocoordinates: 45.3° S, 30.6° W (Wright 2013)

• coordinate stated in text

• small collection-level geographic resolution

When: Rio Mayer Formation, Aptian to Aptian (125.0 - 109.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, black, argillaceous shale

• Arbe (1989) divided this unit into a Lower Member, deposited in a deep marine environment, and an Upper Member, deposited in a shallower environment of higher energy.

• In the area studied, the Río Mayer Formation reaches approximately 72 m in thickness, and is composed of dark, fine-grained deposits of shales and claystones, the latter presenting thin intercalations of limestones.

Size class: microfossils

• Other: Palynomorphs.

Preservation: soft parts

Reposited in the MACN

Collection methods: bulk, chemical, hydrochloric, hydroflouric,

Primary reference: V. Perez Loinaze, S. Archangelsky, and G. Cladera. 2011. Palynostratigraphic study of the Early Cretaceous Río Mayer and Kachaike formations at the Quebrada El Moro Section, Austral Basin, southwestern Argentina. Cretaceous Research (34)161-171 [C. Jaramillo/P. Santamarina/P. Santamarina]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 149849: authorized by Carlos Jaramillo, entered by Patricio Santamarina on 28.08.2013

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Cicatricocisporites cf. ticoensis, Microcachryridites antarcticus Cicatricocisporites cf. ticoensis Microcachryridites antarcticus
Pteridopsida
-	Cyathidites minor, Osmundacidites wellmanii Cyathidites minor Couper 1953 Osmundacidites wellmanii Couper 1953
Muricingulisporis
-	Muricingulisporis cf. annulatus Muricingulisporis cf. annulatus Archangelsky and Gamerro 1966
Polypodiopsida
- Osmundaceae	Rugulatisporites "sp.", Baculatisporites kachaikensis, Baculatisporites comaumensis Rugulatisporites "sp." Pflug and Thomson 1953 Baculatisporites kachaikensis Archangelsky and Llorens 2005 Baculatisporites comaumensis Potonie 1953
- Dicksoniaceae	Trilites "sp.", Cyatheacidites tectifera Trilites "sp." Erdtman and Couper 1947 Cyatheacidites tectifera Archangelsky and Gamerro 1965
- Gleicheniaceae	Gleicheniidites senonicus, Ornamentifera cf. tuberculata Gleicheniidites senonicus Ross 1949 Ornamentifera cf. tuberculata Bolkhovitina 1966
-	Verrucosisporites cf. varians Verrucosisporites cf. varians Volkheimer 1972
Schizaeales - Polypodiidae	Nodosisporites crenimurus, Ruffordiaspora ludbrookiae, Ruffordiaspora australiensis, Appendicisporites cf. pschekhaensis, Appendicisporites cf. potomacensis, Cicatricosisporites cf. minutaestriatus, Cicatricosisporites cuneiformis, Cicatricosisporites pseudotripartitus Nodosisporites crenimurus Davies 1986 Ruffordiaspora ludbrookiae Dettmann and Clifford 1992 Ruffordiaspora australiensis Dettmann and Clifford 1992 Appendicisporites cf. pschekhaensis Pocock 1964 Appendicisporites cf. potomacensis Brenner 1963 Cicatricosisporites cf. minutaestriatus Pocock 1964 Cicatricosisporites cuneiformis Pocock 1964 Cicatricosisporites pseudotripartitus Dettmann 1963
Cibotiumspora
-	Cibotiumspora jurienensis Cibotiumspora jurienensis Filatoff 1975
Equisetopsida
Pinidae - Pinidae	Classopollis "sp.", Cyclusphaera "sp.", Cyclusphaera radiata, Cyclusphaera psilata Classopollis "sp." Pflug 1953 Cyclusphaera "sp." Elsik 1966 Cyclusphaera radiata Archangelsky 1983 Cyclusphaera psilata Volkheimer and Sepulveda 1976

Coniferales - Podocarpaceae	Podocarpidites ellipticus, Podocarpidites cf. vestitus, Podocarpidites cf. canadensis, Podocarpidites cf. parviauriculatus, Podocarpidites marwickii, Callialasporites "sp.", Trisaccites microsaccatus, Gamerroites volkheimeri Podocarpidites ellipticus Cookson 1947 podocarp Podocarpidites cf. vestitus Archangelsky and Villar de Seoane 2005 podocarp Podocarpidites cf. canadensis Pocock 1962 podocarp Podocarpidites cf. parviauriculatus Archangelsky and Villar de Seoane 2005 podocarp Podocarpidites marwickii Couper 1953 podocarp Callialasporites "sp." Sukh-Dev 1961 podocarp Trisaccites microsaccatus Couper 1953 podocarp Gamerroites volkheimeri Archangelsky 1988 podocarp
Angiospermae
Chloranthales - Chloranthaceae	Clavatipollenites "sp." Clavatipollenites "sp." Couper 1958
Gunnerales -	Tricolpites "sp." Tricolpites "sp." Couper 1953
Staplinisporites caminus
-	Staplinisporites caminus Staplinisporites caminus Pocock 1962
Taurocusporites segmentatus
-	Taurocusporites segmentatus Taurocusporites segmentatus Stover 1962
Marchantiopsida
Sphaerocarpales -	Aequitriradites superspinulosus Aequitriradites superspinulosus Archangelsky et al. 2008
Bryopsida
-	Stereisporites cf. antiquasporites Stereisporites cf. antiquasporites Dettmann 1963
Interulobites
-	Interulobites (cf. Interolubites) sp. Interulobites (cf. Interolubites) sp. Phillips 1971 cf. Interolubites sp. Archangelsky 1983
Lycopodiopsida
Selaginellales - Selaginellaceae	Neoraistrickia "sp." Neoraistrickia "sp." Potonié 1956 spikemoss
Selaginellales -	Ceratosporites "sp.", Ceratosporites equalis, Densoisporites velatus, Densoisporites corrugatus Ceratosporites "sp." Cookson and Dettmann 1958 clubmoss Ceratosporites equalis Cookson and Dettmann 1958 clubmoss Densoisporites velatus Dettmann 1963 clubmoss Densoisporites corrugatus Archangelsky and Gamerro 1965 clubmoss
Lycopodiales -	Dictyotosporites complex, Retitriletes austroclavatidites Dictyotosporites complex Cookson and Dettmann 1958 clubmoss Retitriletes austroclavatidites Döring et al. 1963 clubmoss