A new araucarian pollen cone with in situ Cyclusphaera Elsik from the Aptian of Patagonia, Argentina

Fueyo, Georgina M. Del; Archangelsky, Sérgio

doi:10.1016/j.cretres.2005.04.005

Cited by 40 publications

(15 citation statements)

References 29 publications

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“…Araucarian taxa include sterile branches (Araucaria grandifolia Feruglio emend. Del Fueyo and Archangelsky 2002), branches with fertile structures (Nothopehuen brevis Del Fueyo 1991 and Alkastrobus peltatus Del Fueyo and Archangelsky 2005), isolated ovuliferous scales (Araucarites spp.) and isolated pollen grains (Araucarites, Balmeiopsis, Cyclusphaera) (Archangelsky 2003, Del Fueyo and Archangelsky 2002, Del Fueyo and Archangelsky 2005.…”

Section: Introductionmentioning

confidence: 99%

“…Del Fueyo and Archangelsky 2002), branches with fertile structures (Nothopehuen brevis Del Fueyo 1991 and Alkastrobus peltatus Del Fueyo and Archangelsky 2005), isolated ovuliferous scales (Araucarites spp.) and isolated pollen grains (Araucarites, Balmeiopsis, Cyclusphaera) (Archangelsky 2003, Del Fueyo and Archangelsky 2002, Del Fueyo and Archangelsky 2005. On the other hand, the fossil family Cheirolepidiaceae is somewhat less diverse, and is represented by fertile branches included in several species of Tomaxellia and abundant pollen grains of the genus Classopollis (Archangelsky 2003 (Archangelsky 2003).…”

Section: Introductionmentioning

confidence: 99%

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Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina

Vera

Césari

2012

An. Acad. Bras. Ciênc.

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Two new conifer morphospecies represented by a secondary xylem are reported for the Lower Cretaceous Baqueró Group (Santa Cruz Province, Argentina). Agathoxylon sp. is characterized by poorly defined growth rings, predominantly uniseriate pitting in the radial wall of the tracheids, cross fields with 1-6 pits and uniseriate rays. These features are shared with the leafy branches described for the unit as Araucaria grandifolia Feruglio emend. Del Fueyo and Archangelsky. The second taxon, Brachyoxylon sp. cf. B. boureaui, possesses poorly defined growth rings, mixed wood with predominantly uniseriate radial pitting, cross fields with 8-26 pits and uniseriate rays. These taxa represent the first fossil woods described for Baqueroan strata.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina

Vera

Césari

2012

An. Acad. Bras. Ciênc.

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“…Upatoia barnardii is most similar to other described pollen cones attributed to Jurassic and Cretaceous Araucariaceae, both in size (typically smaller than 2.0 cm), in the presence of elongated pollen sacs, and in general pollen morphology (Harris, 1979;Allenbach & van Konijnenburg-van Cittert, 1997;Del Fueyo & Archangelsky, 2005). However, U. barnardii differs from other described araucarian taxa in pollen sac number (e.g., four in Nothopeheun brevis (Del Fueyo, 1991) and six or more in Alkastrobus peltatus (Del Fueyo & Archangelsky, 2005)), the way pollen sacs are attached to the microsporophyll, and in specific features of the pollen grains.…”

Section: Comparison With Fossil Araucariaceaementioning

confidence: 96%

“…However, U. barnardii differs from other described araucarian taxa in pollen sac number (e.g., four in Nothopeheun brevis (Del Fueyo, 1991) and six or more in Alkastrobus peltatus (Del Fueyo & Archangelsky, 2005)), the way pollen sacs are attached to the microsporophyll, and in specific features of the pollen grains. (see Table I for comparison with selected fossil taxa).…”

Section: Comparison With Fossil Araucariaceaementioning

confidence: 99%

“…Pollen cones from Jurassic and Cretaceous conifers in particular are often poorly preserved or known only from compression fossils (e.g., van Konijnenburg-van Cittert, 1971;Harris, 1979;Yao et al, 1998;Del Fueyo & Archangelsky, 2005). As a result, these pollen cones have received relatively little attention in phylogenetic studies of fossil and living conifers (e.g., Miller, 1999), even though the Late Mesozoic was an important interval in the diversification of modern conifer families.…”

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confidence: 99%

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Upatoia barnardiigen. et sp. nov., an araucarian pollen cone within situpollen from the Late Cretaceous (Santonian) of Georgia, USA

Leslie

Herendeen

Crane

2009

Grana

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Araucarian conifer from late Albian amber of northern Spain

Kvaček

Barrón

Heřmanová

et al. 2018

Papers in Palaeontology

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National Museum Prague, V aclavsk e n am. 68, 115 79, Abstract: Araucarian pollen cones Rabagostrobus hispanicus gen. et sp. nov. and their associated foliage Brachyphyllum obesum Heer are described from Lower Cretaceous (Albian) strata of northern Spain. Male cones consist of helically arranged microsporophylls bearing 5-8 elongate pollen sacs with in situ inaperturate Araucariacites-type pollen. The new taxon is compared to material described previously from the Early Cretaceous of North and South Americas. Sterile twigs of B. obesum bear helically arranged leaves with wrinkled margins. Its cuticle has files of predominantly transversely oriented stomata. Both twigs and pollen cones occur as inclusions in amber from the Peñacerrada 1 outcrop ( Alava Province), and as compressions are recorded from the amber-bearing strata sediments of the R abago/El Soplao outcrop. Inclusions of araucariacean plant remains and the co-occurrence of amber and male cone and twig compressions suggest that the amber in these two localities, or at least some of it, was produced by araucariacean plants.

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A new araucarian pollen cone with in situ Cyclusphaera Elsik from the Aptian of Patagonia, Argentina

Cited by 40 publications

References 29 publications

Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina

Fossil woods (Coniferales) from the Baqueró Group (Aptian), Santa Cruz Province, Argentina

Upatoia barnardiigen. et sp. nov., an araucarian pollen cone within situpollen from the Late Cretaceous (Santonian) of Georgia, USA

Araucarian conifer from late Albian amber of northern Spain

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