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1

On Paleozoic Plants from Marine Strata: Trivena Arkansana (Lyginopteridaceae) Gen. Et Sp. Nov., a Lyginopterid from the Fayetteville Formation (Middle Chesterian/Upper Mississippian) of Arkansas, USA

Michael T. Dunn, Gar W. Rothwell and Gene Mapes

Journal:

American Journal of Botany

Year:

2003

Language:

english

File:

PDF, 3.87 MB

english, 2003

2

Primitive Pollen Cone Structure in Upper Pennsylvanian (Stephanian) Walchian Conifers

Gene Mapes and Gar W. Rothwell

Journal:

Journal of Paleontology

Year:

1998

Language:

english

File:

PDF, 1.03 MB

english, 1998

3

Additional Observations on Rhynchosperma quinnii (Medullosaceae): A Permineralized Ovule from the Chesterian (Upper Mississippian) Fayetteville Formation of Arkansas

Michael T. Dunn, Gar W. Rothwell and Gene Mapes

Journal:

American Journal of Botany

Year:

2002

Language:

english

File:

PDF, 2.90 MB

english, 2002

4

On Paleozoic Plants from Marine Strata: Hexaloba finisensia New Genus and Species, a Trigonocarpalean Ovule from the Virgilian (Upper Pennsylvanian: Gzhelian) Finis Shale of Texas

Michael T. Dunn, Gene Mapes and Gar W. Rothwell

Journal:

Journal of Paleontology

Year:

2002

Language:

english

File:

PDF, 2.20 MB

english, 2002

5

Diversity of Ancient Conifers: The Jurassic Seed ConeBancroftiastrobus digitatagen. et sp. nov. (Coniferales)

Gar W. Rothwell, Gene Mapes, Ruth A. Stockey, and Jason Hilton

Journal:

International Journal of Plant Sciences

Year:

2013

Language:

english

File:

PDF, 1.19 MB

english, 2013

6

Hanskerpia gen. nov. and Phylogenetic Relationships among the Most Ancient Conifers (Voltziales)

Gar W. Rothwell, Gene Mapes and Genaro R. Hernandez-Castillo

Journal:

Year:

2005

Language:

english

File:

PDF, 6.92 MB

english, 2005

7

Quaestora Amplecta Gen. Et Sp. N., a Structurally Simple Medullosan Stem from the Upper Mississippian of Arkansas

Gene Mapes and Gar W. Rothwell

Journal:

American Journal of Botany

Year:

1980

Language:

english

File:

PDF, 4.42 MB

english, 1980

8

Suavitas imbricata gen. et sp. nov., An Anatomically Preserved Seed Analogue of Putative Lycophyte Affinities from Upper Pennsylvanian Marine Deposits

Jennifer Rice, Gar W. Rothwell, Gene Mapes and Royal H. Mapes

Journal:

American Journal of Botany

Year:

1996

Language:

english

File:

PDF, 2.92 MB

english, 1996

9

Validation of the Names Utrechtiaceae, Utrechtia, and Utrechtia floriniformis

Gar W. Rothwell and Gene Mapes

Journal:

Year:

2003

Language:

english

File:

PDF, 250 KB

english, 2003

10

Validation of the Names Emporiaceae, Emporia, and Emporia lockardii

Gene Mapes and Gar W. Rothwell

Journal:

Year:

2003

Language:

english

File:

PDF, 295 KB

english, 2003

11

Anatomically Preserved Vojnovskyalean Seed Plants in Upper Pennsylvanian (Stephanian) Marine Shales of North America

Gar W. Rothwell, Gene Mapes and Royal H. Mapes

Journal:

Journal of Paleontology

Year:

1996

Language:

english

File:

PDF, 2.31 MB

english, 1996

12

Compound Pollen Cone in a Paleozoic Conifer

Genaro R. Hernandez-Castillo, Gar W. Rothwell and Gene Mapes

Journal:

American Journal of Botany

Year:

2001

Language:

english

File:

PDF, 1.58 MB

english, 2001

13

Pityostrobus hokodzensis, a New Species of Pinaceous Cone from the Cretaceous of Russia

Stephen R. Ratzel, Gar W. Rothwell, Gene Mapes, Royal H. Mapes and Larisa A. Doguzhaeva

Journal:

Journal of Paleontology

Year:

2001

Language:

english

File:

PDF, 1.43 MB

english, 2001

14

Szecladia New Genus, a Late Permian Conifer with Multiveined Leaves from South China

Zhao-Qi Yao, Lu-Jun Liu, Gar W. Rothwell and Gene Mapes

Journal:

Journal of Paleontology

Year:

2000

Language:

english

File:

PDF, 1.43 MB

english, 2000