Hawkesbury, Chazy Group (Ordovician of Canada)

Where: Ontario, Canada (45.6° N, 74.6° W: paleocoordinates 26.9° S, 55.0° W)

• coordinate estimated from map

When: Chazy Group, Chazyan (470.0 - 457.3 Ma)

Environment/lithology: marine; lithified limestone

Size classes: macrofossils, mesofossils

Primary reference: P. E. Raymond. 1911. The Brachiopoda and Ostracoda of the Chazyan. Annals of the Carnegie Museum 7:215-259 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 172204: authorized by Björn Kröger, entered by Björn Kröger on 30.07.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Eocrinoidea
  -
Paracrinoidea
 Platycystitida - Malocystitidae
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
"Camarotoechia plena" = Rostricellula plena
"Camarotoechia plena" = Rostricellula plena Hall 1847
 Rhynchonellida - Sphenotretidae
"Zygospira acutirostris" = Sphenotreta acutirostris
"Zygospira acutirostris" = Sphenotreta acutirostris Hall 1847
 Orthida - Plaesiomyidae
"Plaesiomys platys" = Multicostella platys
"Plaesiomys platys" = Multicostella platys Billings 1859
 Orthida - Plectorthidae
"Hebertella imperator" = Mimella imperator, "Hebertella borealis" = Mimella borealis
"Hebertella imperator" = Mimella imperator Billings 1859
"Hebertella borealis" = Mimella borealis Billings 1859
Stenolaemata
 Cystoporida - Hexagonellidae
Gastropoda
 Murchisoniina - Trochonematidae
"Trochonema umbilicatum" = Trochonema umbilicata
"Trochonema umbilicatum" = Trochonema umbilicata Hall 1847 snail
 Euomphalina - Raphistomatidae
Raphistoma stamineum Hall 1847 snail
Ostracoda
 Leperditicopida - Leperditiidae
Leperditia canadensis Jones 1858 ostracod
Trilobita
 Proetida - Bathyuridae
Bathyurus cf. angelini trilobite
Bathyurus cf. Bathyurus angelini