Probable microvertebrates, vertebrate-like fossils, and weird things from the Wisconsin Ordovician

Citation
Dl. Clark et al., Probable microvertebrates, vertebrate-like fossils, and weird things from the Wisconsin Ordovician, J PALEONTOL, 73(6), 1999, pp. 1201-1209
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Earth Sciences
Journal title
JOURNAL OF PALEONTOLOGY
ISSN journal
0022-3360 → ACNP
Volume
73
Issue
6
Year of publication
1999
Pages
1201 - 1209
Database
ISI
SICI code
0022-3360(199911)73:6<1201:PMVFAW>2.0.ZU;2-5
Abstract
Phosphatic microfossils including probable microvertebrates occur in the Ea rly and Middle Ordovician rocks of Wisconsin. The eight types described her e include the probable ostracoderm Anatolepis, and six unidentified but pos sible vertebrate fragments as well as the palaeoscolecid worm Milaculum. Th ese fossils are rare, but at two localities several specimens per kg were r ecovered over significant stratigraphic intervals. The high concentration o f certain fossils in the lower part of the Galena Group suggests that there is stratigraphic Value in their description. Identification of similar mat erial or of articulated assemblages of these fossils may eventually lead to identification of biologic affinities.