| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Coxitrigonia
Taxonomy
Coxitrigonia was named by Cooper (2016). Its type is Trigonia moorei.
It was assigned to Austrotrigoniini by Cooper (2016).
It was assigned to Austrotrigoniini by Cooper (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Coxitrigonia Cooper pp. 10 - 12 |
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.
G. †Coxitrigonia Cooper 2016
show all | hide all
†Coxitrigonia brevicostata Kitchin 1903
†Coxitrigonia distincta Kitchin 1903
†Coxitrigonia moorei Lycett and Moore 1870
†Coxitrigonia tealei Cox 1937
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. R. Cooper 2016 | Medium-sized, inequivalve, subtrapezoidal, longer than high, with small insignificant umbones, weakly-convex anterior margin, obliquely-subtruncate respiratory margin and long straight posterodorsal margin; escutcheon relatively broad, shallowly sunken, with beaded commarginal growth rugae; inner carina beaded in early growth, later with prominent transverse nodes; broad, flat, inclined, bipartite area with beaded median carina and finely- beaded radial threads in early growth, giving way to wavy commarginal rows of beads in middle growth and finally irregular growth rugae; RV with broad robust marginal carina with prominent well-spaced transverse nodes; marginal carina of LV narrow, with small nodes that evanesce in later growth; RV with very narrow antecarinal sulcus, that of LV broad and shallow; strong, bold, commarginal flank costae, narrower than interspaces, terminating posteriorly in incipient to distinct nodes. Bajocian – Oxfordian. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family | |||||
| References: Aberhan et al. 2004, Ros-Franch et al. 2014 | |||||
Age range: base of the Bathonian to the top of the Late/Upper Oxfordian or 168.20000 to 154.80000 Ma
Collections (24 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bathonian | Kenya | Trigonia brevicostata (36460) | |
| Callovian | Tanzania | Trigonia tealei (36412 36416 36434) | |
| Callovian | India | Trigonia brevicostata (63236 63242 68089 68665 68667 68673) Trigonia brevicostata, Trigonia distincta (67622 67630 68662 68663 68664) Trigonia distincta (61467 68556 68657) | |
| Early/Lower Callovian | India | Trigonia distincta (62352 62353) | |
| Early/Lower Oxfordian | India | Trigonia brevicostata (63535 63537) | |
| Oxfordian | Tanzania | Trigonia tealei (36421) | |
| Late/Upper Oxfordian | Tanzania | Trigonia tealei (36419) |