scholarly journals Revised megafossil zonation of Middle and early Upper Devonian strata of the central and lower Mackenzie Valley, District of Mackenzie

1974 ◽  
Author(s):  
A E H Pedder
Keyword(s):  
Upper Devonian ◽  
Early Upper

On the Occurrence of Psilophyton princeps in the Early Upper Devonian of New York

1961 ◽  
Vol 48 (6) ◽  
pp. 473 ◽  
Author(s):  
F. M. Hueber ◽  
J. D. Grierson
Keyword(s):  
New York ◽  
Upper Devonian ◽  
Early Upper

VIII.—On a New Long-headed Dipnoan Fish from the Upper Devonian of Scaumenac Bay, P.Q., Canada

1937 ◽  
Vol 59 (1) ◽  
pp. 241-266 ◽  
Author(s):  
W. Graham-Smith ◽  
T. S. Westoll
Keyword(s):  
British Museum ◽  
Upper Devonian ◽  
Museum Collections ◽  
Present Account ◽  
New Form ◽  
Devonian Age ◽  
Early Upper

The well-known deposits of early Upper Devonian age at Scaumenac Bay, P.Q., Canada, have yielded numerous specimens of the rather primitive Dipnoan which is now known as Scaumenacia curta (Whiteaves). During the summer of 1984 one of the authors (W. G.-S.) obtained at this locality three specimens of a very distinct new Dipnoan, characterised by an elongated head and other features. Three other specimens of this new form [No. P. 6785 in the British Museum (Nat. Hist.), the anal fin-skeleton of which was figured by Woodward (1893, p. 241) under the name Scaumenacia curta (Whiteaves), and two in the Royal Scottish Museum] were subsequently recognised in museum collections, but the present account is based entirely on the three specimens mentioned above. From these it has been possible to describe almost the whole skeleton, except the endocranium, and to compare it, in some detail, with those of other primitive Dipnoi; in this comparison we have used the results of work by Porster-Cooper (1937) on Dipterus and by one of the present authors (T. S. W., nearing completion) on certain primitive Dipnoi.

scholarly journals <i>Kirkbyites</i> Johnson, an ostracod genus indicative of pelagic palaeo-environments

1992 ◽  
Vol 11 (2) ◽  
pp. 229-231
Author(s):  
Gerhard Becker ◽  
Horst Blumenstengel
Keyword(s):  
Central Europe ◽  
Type Species ◽  
Upper Devonian ◽  
Low Energy ◽  
The Other ◽  
Harz Mountains ◽  
Upper Carboniferous ◽  
Early Upper

Abstract. A third Kirkbyites species, K. hercynicus sp. nov., is described from the early Upper Devonian (early Famennian) of the Harz Mountains (Central Europe) to join the other two known species of the genus Kirkbyites upsoni Johnson, the Upper Carboniferous type species from Nebraska (U.S.A.), and the late Upper Devonian Kullmannissites? solus Becker from N Spain (W Europe). Its biotype indicative carapace features, characteristic of marine low-energy palaeo-environments, place Kirkbyites Johnson, 1936 (Ostracoda, Palaeocopida, Kirkbyacea, Amphissitidae) into Becker’s “Thuringian” ecotype.

Marine faunas from concealed Devonian rocks of southern England and their reflection of the Frasnian transgression

1981 ◽  
Vol 118 (6) ◽  
pp. 679-697 ◽  
Author(s):  
D. E. Butler
Keyword(s):  
Upper Devonian ◽  
Early Devonian ◽  
Marine Transgression ◽  
Southern England ◽  
Changing Environments ◽  
Northern France ◽  
Marine Fossils ◽  
Early Upper

SummarySuccessive early Upper Devonian deposits penetrated in the Willesden No. 1 Borehole, along with their associated fossils, bear testimony to changing environments attributed to movements of the shoreline. The inferences drawn from these, and from marine-influenced deposits and faunas of similar age encountered elsewhere in the concealed strata, reinforce and refine the concept of a discrete Frasnian marine transgression. The event was probably linked with a similar, mid-Frasnian, movement in northern France.Marine fossils have been recovered from the Downtonian–Devonian sequences of nineteen boreholes in southern England, most of which include strata referable to the Frasnian or early Famennian. A revised, Frasnian, age is suggested for deposits encountered in the Brightling Borehole and part of the Bolney succession. Upper Devonian strata with marine faunas are recognized in the Ashwell, Little Chishill and Northbrook boreholes, and late Silurian or very early Devonian at Lakenheath.

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