. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. ! 1 I i ' :|il it 490 THE CARBONIFEROUS SYSTEM. somewhat •wrinkled at the sides, truncatcil by regularly rhombic; scars, each with three approximate vascular points. M. C, Joggins (J. W. D.). 3. , spec. nov. (Fig. 170, G), Leaf-bases rhombic, small, with rhombic scars broader than long; vascular points obscure; leaves linear, acute, three inches or mor
. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. ! 1 I i ' :|il it 490 THE CARBONIFEROUS SYSTEM. somewhat •wrinkled at the sides, truncatcil by regularly rhombic; scars, each with three approximate vascular points. M. C, Joggins (J. W. D.). 3. , spec. nov. (Fig. 170, G), Leaf-bases rhombic, small, with rhombic scars broader than long; vascular points obscure; leaves linear, acute, three inches or more in length, with a keel and two faint lateral ribs. Cones large, sessile. U. C, Pictou; M. C, Joggins (J. W. D.); M. C, Sydney (R. Urown). 4. L. platt/stigma, spec. nov. (Fig. 170, E), Leaf-bases rhombic, broader than long, little prominent; scars rhombic, oval, acuminate, slightly emarginate above; vascular points two, approximate or confluent. M. C, Sydney (R. Brown); Joggins (J. W. D.). 5. L. tetragonus, spec. nov. (Fig. 170, D). Leaf-bases square, fur- rowed on the sides; leaf-scar central, with apparently a single central vascular point. M. C, Joggins (J. W. D.). DiPLOTEGiuM, Corda. Diplotegium retmum, spec. nov. (Fig. 172, B). The fragments referable to plants of this genus are imperfect and obscure. The most distinct show leaf-bases ascending obliquely, and terminating by a retuse end with a papilla in the notch. Some less distinct fragments may possibly be imperfectly preserved specimens of Lepidodendron or Lepidophloios. M. C, Joggins (J. W. D.). Knokria. Nearly all the plants referred to this genus in the Carboniferous rocks are, as Goeppert has shown, imperfectly preserved stems of Lepidodendron. In the Lower Coal formation many such Knorria forms are afforded by L. corrugatum. Knorria Sellonii, Sternberg. This appears different from the ordinary Knorrice; its supposed leaves may be aerial roots. It has a large pith-cylinder with very distant tabular floors, li
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
