Reevaluation of the systematic position of Scenella
Lethaia
By: E. L. Yochelson and Cid D. Gil
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Abstract
Specimens originally illustrated from Lower Cambrian rocks of the Sierra Morena in Badajoz and Sevilla Provinces, southwestern Spain are supplemented by new material from another locality and are described as Scenella morenensis n. sp. Although Scenella was originally considered to be a patelliform gastropod, for three decades now the genus has been classified as a monoplacophoran. The type species of Scenella, S. reticulata Billings, does not show any paired muscles scars, nor does this new species; such scars are indicative of the Monoplacophora. This new species of Scenella does exhibit features which suggest assignment to the chondrophorine coelenterates. If so, Scenella cannot represent the ancestral form of mollusk.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Reevaluation of the systematic position of Scenella |
| Series title | Lethaia |
| DOI | 10.1111/j.1502-3931.1984.tb02024.x |
| Volume | 17 |
| Issue | 4 |
| Year Published | 1984 |
| Language | English |
| Publisher | Wiley |
| Description | 10 p. |
| First page | 331 |
| Last page | 340 |
| Country | Spain |
| Other Geospatial | Sierra Morena in Badajoz and Sevilla Provinces, southwestern Spain |