- Source: Mucrospirifer
Mucrospirifer is a genus of extinct brachiopods in the class Rhynchonellata (Articulata) and the order Spiriferida. They are sometimes known as "butterfly shells". Like other brachiopods, they were filter feeders. These fossils occur mainly in Middle Devonian strata and appear to occur around the world, except in Australia and Antarctica.
The biconvex shell was typically 2.5 cm long, but sometimes grew to 4 cm. The shell of Mucrospirifer has a fold, sulcus and costae. It is greatly elongated along the hinge line, which extends outward to form sharp points. This gives them a fin- or wing-like appearance. The apex area (umbo) of the pedicle valve contains a small fold for the pedicle. Mucrospirifer lived in muddy marine sediments, and were attached to the sea floor via the pedicle. The shell sometimes looks like two seashells stuck together.
Species
Mucrospirifer albanensis
Mucrospirifer arkonensis
Mucrospirifer bouchardi
Mucrospirifer diluvianoides
Mucrospirifer grabaui
Mucrospirifer medfordsis
Mucrospirifer mucronatus (Conrad, 1841)
Mucrospirifer paradoxiformis
Mucrospirifer profundus
Mucrospirifer prolificus
Mucrospirifer refugiensis
Mucrospirifer thedfordensis
Mucrospirifer williamsi
References
External links
Color reconstruction of Mucrospirifer arkonensis at www.emilydamstra.com
Kata Kunci Pencarian:
- Paleontologi
- Daftar genus brakiopoda
- Mucrospirifer
- Mucrospirifer mucronatus
- Spiriferida
- List of index fossils
- Paleontology
- Tully Formation
- List of the prehistoric life of Michigan
- List of the prehistoric life of New York
- List of the prehistoric life of Ohio
- List of the prehistoric life of Indiana
