Literature on vegetational history in Latin America supplement I

Graham, Alan

doi:10.1016/0034-6667(79)90043-5

Review of Palaeobotany and Palynology

1979

DOI: 10.1016/0034-6667(79)90043-5

|View full text |Cite

Literature on vegetational history in Latin America supplement I

Alan Graham¹

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1982

1987

Publication Types

Select...

Article6

Relationship

Self Cite2

Independent4

Authors

Journals

Cited by 8 publications

(1 citation statement)

References 108 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nearest Eocene fossil floras to Graham (1977), but these are either the south are from the upper Los Cuervos and Mirador Formations of Colombia (Gonzalez preliminary reports or deal with the fossil record of specific palynomorphs rather than entire paly-Guzman, 1967) and the Rio Turbio Formation nofloras. The results presented here are considof Argentina (Romero, 1977; for a more com-ered an initial effort to characterize the Eocene plete bibliography see Graham, 1973a, 1979a, vegetation of central Panama and must be aug-1982. The former are of early and middle Eocene mented considerably before a detailed concept age, compared to the late Eocene Gatuncillo pal-of the regional paleocommunities, paleoenvironynoflora, and the latter presently treats only the ments, and vegetational history can be develgymnosperms and the Fagaceae.…”

mentioning

confidence: 99%

Studies in Neotropical Paleobotany. IV. The Eocene Communities of Panama

Graham¹

1985

Annals of the Missouri Botanical Garden

Self Cite

View full text Add to dashboard Cite

Mortoniodendron. Moist lowland communities, as presently occur between the Atlantic side of Gatun Lake and Pina, are well represented, whereas vegetation of higher altitudes and drier habitats is poorly represented or absent. A reconstruction of paleoenvironments, based on varied lines of biological and geological evidence, includes a series of volcanic islands of moderate to low relief, bordered seaward by shallow limestone-depositing coralline communities, and fringed by mangrove swamps of Rhizophora and especially Pelliceria. Inland communities included tropical moist, tropical wet, and premontane wet forests growing under the general tropical conditions of high rainfall (ca. 2,500 mm) and high uniform temperatures. The lowland insular environment may not record subtle climatic changes more evident in paleocommunities derived from continental areas of greater topographic relief and may reflect paleoenvironmental conditions in the immediate vicinity of the Gatuncillo depositional basin. An assessment of regional paleoclimates and paleophysiography must await discovery of other fossil floras, because the Gatuncillo assemblage is the only one of Eocene age known for northern Latin America.The vegetation characterizing the Eocene ep-To the north the closest Eocene floras are from Latin Mississipp known. There has never been a detailed study gion studied by Dilcher and collaborators (e.g., published on an extensive flora of this age for Dilcher, 1973), Elsik (1974), Frederiksen (1980, or the Antilles. Con-and others. These are some 2,500 km from the Central America, Mexico, or the Antilles. Consequently, the Gatuncillo palynoflora of Panama Panama localities. Additional information is is of interest in providing a first view of this provided by Germeraad et al. ( 1968), Muller vegetation. The nearest Eocene fossil floras to Graham (1977), but these are either the south are from the upper Los Cuervos and Mirador Formations of Colombia (Gonzalez preliminary reports or deal with the fossil record of specific palynomorphs rather than entire paly-Guzman, 1967) and the Rio Turbio Formation nofloras. The results presented here are considof Argentina (Romero, 1977; for a more com-ered an initial effort to characterize the Eocene plete bibliography see Graham, 1973a, 1979a, vegetation of central Panama and must be aug-1982. The former are of early and middle Eocene mented considerably before a detailed concept age, compared to the late Eocene Gatuncillo pal-of the regional paleocommunities, paleoenvironynoflora, and the latter presently treats only the ments, and vegetational history can be develgymnosperms and the Fagaceae. Both belong to oped, a completely diflferent paleophysiographic province because at this time South America was isolated between Africa and North America (e.g., Raven & Axelrod, 1974), while the present region of Central America was occupied by a series of volcanic islands trailing south from the NorthThe Collecting Locality Samples were collected from a roadside ex-Â»sure of the Gatuncillo Formation ...

show abstract

mentioning

confidence: 99%

Studies in Neotropical Paleobotany. IV. The Eocene Communities of Panama

Graham¹

1985

Annals of the Missouri Botanical Garden

Self Cite

View full text Add to dashboard Cite

show abstract

Miocene Communities and Paleoenvironments of Southern Costa Rica

Graham

1987

American J of Botany

View full text Add to dashboard Cite

Fossil palynomorphs representing 40 taxa have been recovered from lower(?) Miocene (Uscari sequence) deposits in southern Costa Rica. Three paleocommunities are suggested for the vicinity of the depositional basin—coastal mangrove (Rhizophora); some form of the lowland wet forest (Phaeoceros, Cnemideria, Bombacaceae, Alchornea, cf. Glycydendrum, cf. Banisteriopsis, Hiraea, Myrtaceae (Eugenia/Myrcia type), and Melastomataceae); and especially the midaltitude (1,000–2,000 m) cloud forest (Lycopodium, Selaginella, cf. Hymenophyllum, Lophosoria, Pityrogramma, Pteris, Podocarpus (common), Ilex, Ericaceae (Cavendishia type), and Lisiantehus). Absent are members of higher altitude communities, and vegetation of drier to arid aspect. Savannahs, important in the interchange of mammalian faunas between North and South America, remain undetected in Gulf/Caribbean Tertiary floras. Paleoenvironments are estimated as wet tropical, similar to present‐day conditions, with a less diverse and insular paleophysiography accounting principally for differences between the early Miocene and modern life zones. This is in contrast to the Paraje Solo assemblage from Veracruz, Mexico, which reflects distinctly cooler climates in the late Miocene. These results are consistent with plate tectonic models for the Gulf/Caribbean region, and emerging global paleotemperature patterns derived from 18O studies of marine invertebrates.

show abstract

Tropical American Tertiary Floras and Paleoenvironments: Mexico, Costa Rica, and Panama

Graham

1987

American J of Botany

Self Cite

View full text Add to dashboard Cite

Three Tertiary microfossil floras from northern Latin America are considered with reference to paleoenvironments and paleoenvironmental trends, especially paleotemperatures: Gatuncillo (middle (?) to late Eocene, Panama), Uscari (early Miocene, Costa Rica), and Paraje Solo (late Miocene, Veracruz, Mexico). The composition of the floras reflect lower temperatures in the late Miocene for terrestrial environments at ca. 18°N latitude, and temperatures comparable to the present for the middle (?) to late Eocene and early Miocene at ca. 9°N latitude. These values are consistent with Tertiary paleotemperature curves derived from 18O and 13C isotope studies of marine invertebrates, and show that the global drop in temperature at the end of the Miocene affected terrestrial biotas at least as far south as 18°N latitude. Comparison of the paleobotanical data with paleotemperature curves further reveals that the late Miocene was not only a likely time for the introduction of northern temperate elements into the Latin American biota (viz., establishment of the floristic and faunal relationship between eastern United States and eastern Mexico), but that earlier times were progressively less favorable because of generally rising temperatures and more tropical conditions. Information on the Tertiary history of vegetation in the Gulf/Caribbean region is also being monitored with reference to the effect of global sea level changes, although the specific influence of these fluctuations cannot as yet be detected.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Literature on vegetational history in Latin America supplement I

Cited by 8 publications

References 108 publications

Studies in Neotropical Paleobotany. IV. The Eocene Communities of Panama

Studies in Neotropical Paleobotany. IV. The Eocene Communities of Panama

Miocene Communities and Paleoenvironments of Southern Costa Rica

Tropical American Tertiary Floras and Paleoenvironments: Mexico, Costa Rica, and Panama

Contact Info

Product

Resources

About