Greenops ✝
Description | Greenops is a mid-sized Devonian trilobite of the order Phacopida, subfamily Asteropyginae.They are mainly reported from the mid-Devonian Hamilton Group of upstate New York and southwestern Ontario. A similar-looking trilobite from Morocco is often mis-labelled Greenops. Greenops had schizocroidal eyes (resembling compound eyes in insects), large genal spines and short, sharp spines at the tip of each segment of the pygidium ("tail"). Greenops lived in warm, fairly deep water. In the Hamilton Group of New York, they are found with Phacops, Dipleura and Bellacartwrightia, a trilobite that resembles Greenops but has much larger pygidial spines. In Ontario, they are found in the Widder Formation, which outcrops at Arkona, where they are, by far, the dominant trilobite. From Wikipedia article at https://en.wikipedia.org/wiki/Greenops, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | |||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Source Data |
| |||||||||||||||||||||||||||||||||||||||||||||||||||
Rank | genus | |||||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomy (GBIF,PBDB) | Life : Animalia : Arthropoda : Trilobita : Phacopida : Acastidae : Greenops | |||||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomic Status (GBIF) | accepted | |||||||||||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
| |||||||||||||||||||||||||||||||||||||||||||||||||||
Scientific Name | Greenops Delo, 1935 | |||||||||||||||||||||||||||||||||||||||||||||||||||
Name Published In | J. Paleont., 9 | |||||||||||||||||||||||||||||||||||||||||||||||||||
Opinions (PBDB) |
| |||||||||||||||||||||||||||||||||||||||||||||||||||
Status (PBDB) | extinct | |||||||||||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 409 - 403 Ma Early/Lower Devonian | |||||||||||||||||||||||||||||||||||||||||||||||||||
Last Recorded Appearance | 384 - 372 Ma Devonian | |||||||||||||||||||||||||||||||||||||||||||||||||||
Environment | marine (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||||||||
Motility | fast-moving (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||||||||
Vision | well-developed (based on Acastidae) | |||||||||||||||||||||||||||||||||||||||||||||||||||
Diet | carnivore (based on Phacopina) | |||||||||||||||||||||||||||||||||||||||||||||||||||
Ontogeny | molting,addition of parts (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||||||||
Taphonomy | low Mg calcite, chitin (based on Trilobita) | |||||||||||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | M. Mergl and D. Massa. 1992. Devonian and Lower Carboniferous brachiopods and bivalves from western Libya. Biostratigraphie du Paleozoique 12:1-115 | |||||||||||||||||||||||||||||||||||||||||||||||||||
Wikipedia | https://en.wikipedia.org/wiki/Greenops |
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
---|---|---|---|---|---|
Greenops acquituberculatus species | accepted (GBIF) | No associated record in PBDB | |||
Greenops boothi species | accepted (GBIF) | No associated record in PBDB | |||
Greenops kindlei species | accepted (GBIF) | No associated record in PBDB | |||
Greenops perijaensis ✝ species | accepted (GBIF) listed (PBDB) | 1 | 388 Ma Middle Devonian | 388 Ma Middle Devonian | |
Greenops transversensis species | accepted (GBIF) | No associated record in PBDB |
Synonymy List
Year | Name and Author |
---|---|
1837 | Cryphaeus Green pp. 217-226 |
1935 | Greenops Delo pp. 402-420 |
2002 | Cryphaeus Sepkoski, Jr. |
2002 | Greenops Sepkoski, Jr. |
2003 | Greenops Jell and Adrain p. 380 |
Livingston County, New York, USA