Mohawk Valley Fossils
Dinorthis
The figure below shows the distribution of samples containing the orthid brachiopod Dinorthis.
Dinorthis is a common brachiopod in some parts of the MRV strata.
- Plaesiomys (Dinorthis) Hall & Clarke, 1892 [*Orthis pectinella Conrad & Emmons, 1842] [=Dinorthis Kobayashi, 1937]
-
Resembling Plaesiomys (Plaesiomys), but radial
ornamentation costate, exceptionally with incipient
costellae.
M. Ord. Northern Hemisphere
- Family Plaesiomyidae Schuchert, 1913.
-
Ventral interareas variably disposed, hinge lines wide;
delthyrium and notothyrium rarely covered by deltidium
and chilidium; ventral muscle field subquadrate,
extending well beyond umbonal region; mantle canal system
saccate, with proximal parts of vascula media
short, divergent.
Ord.
Order Orthida Schuchert & Cooper, 1932.
Treatise on Invertebrate Paleontology, H319