अंग्रेज़ी किताबें जो «SPHENOPSID» से संबंधित हैं
निम्नलिखित ग्रंथसूची चयनों में
sphenopsid का उपयोग पता करें।
sphenopsid aसे संबंधित किताबें और अंग्रेज़ी साहित्य में उसके उपयोग का संदर्भ प्रदान करने वाले उनके संक्षिप्त सार।.
1
Paleobotany and the Evolution of Plants
These first-order branches show some evidence of longitudinal ribbing that
extends through the nodes, a feature of another Upper Devonian sphenopsid,
Archaeocalamites. First-order branches of Pseudobornia have second-order
branches ...
Wilson Nichols Stewart, 1993
2
U.S. Geological Survey professional paper
No precise stratigraphic age determinations are therefore possible from
recognition of these sphenopsid species. INTRODUCTION The distribution of
sphenopsids in Antarctica has already been indicated by Rigby and Schopf (
1969). Leafless ...
Geological Survey (U.S.), 1969
3
Geological Survey Professional Paper
No precise stratigraphic age determinations are therefore possible from
recognition of these sphenopsid species. INTRODUCTION The distribution of
sphenopsids in Antarctica has already been indicated by Rigby and Schopf (
1969). Leafless ...
4
The natural systematic of plants in the light of the present ...
The group of the Cordaz'tales appears here as a pteridospermic stage of the
microphyllous resp. sphenopsid line. The same relation is evidently between the
Cycadeae and the Ginkgoales; this last plant ordre appears as a cycadophytic
stage ...
5
Historical perspective of early twentieth century ...
Edwin D. Levittan and E. S. Barghoorn (1948) described a very small sphenopsid
cone, Sphenostrobus thompsonii. The sporangia, borne singly on each of 16
sporophylls per whorl, bear Vestispora spores. S. H. Mamay, as a part of his ...
William Culp Darrah, Paul C, Robert Herman Wagner, 1995
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Paleobotany: The Biology and Evolution of Fossil Plants
2006a. Further study of the Late Devonian sphenopsid Hamatophyton verticil-
latum from China. International Journal of Plant Sciences 167: 885–896. [10]
Wang, D.-M., S.-G. Hao, Q. Wang, and J. Z. Xue. 2006b. Anatomy of the Late
Devonian ...
Edith L. Taylor, Thomas N. Taylor, Michael Krings, 2009
!31. Figure v-31. Pennsylvanian age coal swamp forest. Letters indicate the
following: Am — small amphibian; As — As- terophyllites, the leaves of the large
sphenopsid called Calamites; C — Calamites, a large sphenopsid; D — giant ...
John Adam Dorr, Donald F. Eschman, 1970
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Principles of Paleobotany
The fern and sphenopsid clades are sister to the seed plants within the
euphyllophyte clade. Both ferns and sphenopsids have members in the living
flora, although their modern diversities are vastly different. Both the horsetails
and the ferns ...
9
Ancient Life of the Great Lakes Basin: Precambrian to ...
We have already discussed pulling apart and putting back together the jointed
stems of modern horsetails. The ancient sphenopsids were also jointed (fig. 38a-
c), and these joints occurred both in the trunks and in the stems. Sphenopsid ...
10
Geological Survey Bulletin
Am. Geographers Annals, v. 40, no. 3, p. 188-195, Sept. 1950. An analysis of
Davis's contributions to the development of the science of geomorphology. Baxter
, Robert W. Peltastroius reedae, a new sphenopsid cone from the Pennsylvanian
of ...
