| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Parallelodus obliquus
Taxonomy
Parallelodus obliquus was named by Branson (1909) [DISTRIBUTION: Middle Ordovician; Missouri.]. Its type specimen is Walker Museum 11534, a shell, and it is a 3D body fossil. Its type locality is Residuary Auburn Chert Beds, east of Auburn , which is in a Turinian carbonate claystone in the Decorah Formation of Missouri.
It was corrected as Parallelodus obliqua by Foerste (1920).
It was corrected as Parallelodus obliqua by Foerste (1920).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Parallelodus obliquus Branson p. 43 figs. Pl. vii. f. .9-10. |
| 1920 | Parallelodus obliqua Foerste p. 206 |
| 1969 | Parallelodus obliquus Cox et al. p. N398 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Parallelodus obliquus Branson 1909
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E.B. Branson 1909 | Shell obliquely subovate, strongly convex, maximum length observed forty millimeters, width half the length, widest at posterior end of hinge. Hinge plate nearly straight, about half the length of the shell. Beaks situ ated slightly in front of the middle of the hinge line. One tooth anterior and one posterior to beaks in right valve; two teeth anterior and two posterior to beaks in left valve. Teeth long, almost parallel to hinge line. The anterior margin of the shell curves abruptly downward from the hinge to the ventral margin, ventral margin moderately and evenly convex, posterior margin passing downward and backward in a nearly straight line to the ventral margin. Umbones prominent, curving inward over the hinge line. An umbonal ridge, prominent for half the length of the shell, extends backward to the pos tero-ventral margin. Surface of shell marked with rather coarse concentric striae, faintly impressed on casts. Mus cular scars not traceable on casts. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: f = family, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004 | |||||