Investigations of angiosperms from the eocene of North America: A new Juglandaceous catkin

William L. Crepet; Charles P. Daghlian; Michael Zavada

doi:10.1016/0034-6667(80)90019-6

Investigations of angiosperms from the eocene of North America: A new Juglandaceous catkin

William L. Crepet
, Charles P. Daghlian
, Michael Zavada

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

A new type of catkin allied with the Alfaroa-Oreomunnea-Engelhardia complex of the Juglandaceae has been recovered from the sediments of the middle Eocene Claiborne Formation in the southeastern United States. This catkin is distinct from Eokachyra (another staminate catkin from the Claiborne Formation allied with the same complex of extant genera as the new fossils) in having smaller florets, different bract morphology, possibly more floral envelope parts, and pollen decidedly different in size and morphology. This fossil inflorescence seems to be most closely allied with an extant species that is presently indigenous to southeast Asia. Variation in pollen morphology and its ramifications are considered in the new type of catkin and in Eokachyra.

Original language	English (US)
Pages (from-to)	361-370
Number of pages	10
Journal	Review of Palaeobotany and Palynology
Volume	30
Issue number	C
DOIs	https://doi.org/10.1016/0034-6667(80)90019-6
State	Published - 1980
Externally published	Yes

Bibliographical note

Funding Information:
The authors gratefully acknowledge advice and comments of Professor David L. Dilcher, Indiana University. Research was supported by NSF Grants DEB-7602886 and DEB-7811120 to W.L.C.

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10.1016/0034-6667(80)90019-6

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@article{9716e87e785441669268603cc8c9576e,

title = "Investigations of angiosperms from the eocene of North America: A new Juglandaceous catkin",

abstract = "A new type of catkin allied with the Alfaroa-Oreomunnea-Engelhardia complex of the Juglandaceae has been recovered from the sediments of the middle Eocene Claiborne Formation in the southeastern United States. This catkin is distinct from Eokachyra (another staminate catkin from the Claiborne Formation allied with the same complex of extant genera as the new fossils) in having smaller florets, different bract morphology, possibly more floral envelope parts, and pollen decidedly different in size and morphology. This fossil inflorescence seems to be most closely allied with an extant species that is presently indigenous to southeast Asia. Variation in pollen morphology and its ramifications are considered in the new type of catkin and in Eokachyra.",

author = "Crepet, \{William L.\} and Daghlian, \{Charles P.\} and Michael Zavada",

note = "Funding Information: The authors gratefully acknowledge advice and comments of Professor David L. Dilcher, Indiana University. Research was supported by NSF Grants DEB-7602886 and DEB-7811120 to W.L.C.",

year = "1980",

doi = "10.1016/0034-6667(80)90019-6",

language = "English (US)",

volume = "30",

pages = "361--370",

journal = "Review of Palaeobotany and Palynology",

issn = "0034-6667",

publisher = "Elsevier B.V.",

number = "C",

}

TY - JOUR

T1 - Investigations of angiosperms from the eocene of North America

T2 - A new Juglandaceous catkin

AU - Crepet, William L.

AU - Daghlian, Charles P.

AU - Zavada, Michael

N1 - Funding Information: The authors gratefully acknowledge advice and comments of Professor David L. Dilcher, Indiana University. Research was supported by NSF Grants DEB-7602886 and DEB-7811120 to W.L.C.

PY - 1980

Y1 - 1980

N2 - A new type of catkin allied with the Alfaroa-Oreomunnea-Engelhardia complex of the Juglandaceae has been recovered from the sediments of the middle Eocene Claiborne Formation in the southeastern United States. This catkin is distinct from Eokachyra (another staminate catkin from the Claiborne Formation allied with the same complex of extant genera as the new fossils) in having smaller florets, different bract morphology, possibly more floral envelope parts, and pollen decidedly different in size and morphology. This fossil inflorescence seems to be most closely allied with an extant species that is presently indigenous to southeast Asia. Variation in pollen morphology and its ramifications are considered in the new type of catkin and in Eokachyra.

AB - A new type of catkin allied with the Alfaroa-Oreomunnea-Engelhardia complex of the Juglandaceae has been recovered from the sediments of the middle Eocene Claiborne Formation in the southeastern United States. This catkin is distinct from Eokachyra (another staminate catkin from the Claiborne Formation allied with the same complex of extant genera as the new fossils) in having smaller florets, different bract morphology, possibly more floral envelope parts, and pollen decidedly different in size and morphology. This fossil inflorescence seems to be most closely allied with an extant species that is presently indigenous to southeast Asia. Variation in pollen morphology and its ramifications are considered in the new type of catkin and in Eokachyra.

UR - https://www.scopus.com/pages/publications/0345834134

UR - https://www.scopus.com/pages/publications/0345834134#tab=citedBy

U2 - 10.1016/0034-6667(80)90019-6

DO - 10.1016/0034-6667(80)90019-6

M3 - Article

AN - SCOPUS:0345834134

SN - 0034-6667

VL - 30

SP - 361

EP - 370

JO - Review of Palaeobotany and Palynology

JF - Review of Palaeobotany and Palynology

IS - C

ER -

Investigations of angiosperms from the eocene of North America: A new Juglandaceous catkin

Abstract

Bibliographical note

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