Back
Macivera gracilis
Macivera gracilis Kotyk, Basinger, Gensel, T.A. Freitas Amer. J. Bot., 2002, 89(6): 1009–1011. 1 Jun 2002
- Name
- Macivera gracilis
- Rank
- Species
- Generic Name
- [Genus] Macivera
- Authors (Pub.)
- Kotyk M. E.
Basinger J. F.
Gensel P. G.
de Freitas T. A.
- Publication
- Morphologically complex plant macrofossils from the Late Silurian of Arctic Canada [2002/6]
- Journal
- American Journal of Botany
- Annee/Jahrgang
- 2002
- Volume
- 89
- Issue
- 6
- Page number
- 1009–1011
- Year
- 2002
- Parent Taxon
- [Genus] Macivera
- Stratigraphy
- Ludfordian
- Location
- About 14 km northeast of Polar Bear Pass research station, Bathurst Island, Nunavut, Canada.
- Latitude/Longitude
- 75.847000
- 98.592778
Data for Holotypus
- Repository
- University of Saskatchewan, Geological Museum, Paleobotanical Collection, Saskatoon, Canada
- Repository Number
- US385-2398
- Diagnosis
- As for generic diagnosis. Plant about 8 cm tall. Axes naked, 0.1–1.0 mm wide, branching isotomous at an acute angle, either tapering distally to a point or terminating in a small cluster of 2–10 sporangia; fertile region 2.5–5.5 mm long. Sporangia sessile or on short indistinct stalks and inserted obliquely. Sporangia 1.3–2.0 mm long, 1.1–1.3 mm wide, with a distal dehiscence zone. Immature spores are round, approximately 50 μm in diameter.
