BRYOZOA OF THE MISSION ARGILLITE (PERMIAN), NORTHEASTERN WASHINGTON

1
BRYOZOA OF THE MISSION ARGILLITE (PERMIAN),
NORTHEASTERN WASHINGTON

• Edward M. Snyder
• Shepherd College
• Ernest H. Gilmour
• Eastern Washington University

2

• Index map showing location of biohermal bank in
  northeastern Washington

3
Location of three measured sections
Plan view
4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
Most of the bryozoans were collected near the
three arrows below
Plan view
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
Fistuliramus pacficus Gilmour and Snyder Similar
to F. permiscus Morozova and Krutchinina from the
Canadian Arctic
13
Meekoporella inflecta Gilmour and Snyder
Similar to M. akiyoshiensis Sakagami from Japan
14
Neoeridotrypella missionensis Gilmour and
Snyder The only species similar to a Great
Basin species
15
Coeloclemis urhausenii Gilmour and
Snyder Similar to C. minima Sakagami from Japan
16
Tabulipora colvillensis Gilmour and
Snyder Similar to T. wangcanesis Yang and
Lu and T. frugiformis Xia from China Also
similar to T. ordinata Morozova from Russian
Platform
17
Rhombotrypella kettlensis Gilmour and
Snyder Similar to R. summa Morozova from the
Russian Platform and R. alfredensis Morozova and
Krutchinina from the Canadian Arctic
18
Dyscritella iwaizakiensis
Sakagami Species described from Japan
19
Dyscritella iwaizakiensis Sakagami, 1961
20
Dyscritella iwaizakiensis Sakagami, 1961
21
Dyscritella iwaizakiensis
22
Pamirella oculus Gilmour and Snyder Very similar
to P. irregularis Xia from China
23
Pinegopora petita Gilmour and Snyder Only
other species is P. delicata Shishova from the
Russian Platform
24
Sakagamiina easternensis Gilmour and Snyder New
genus and species of timanodictids
25
Hayasakapora cf. erectoradiata Sakagami Very
similar to specimens described from Japan
26
Wjatkella nanea Gilmour and Snyder
27
Tangential view
28
Transverse view
29
Longitudinal view
30
Wjatkella nanea Gilmour and Snyder Similar to
species described from the Russian Platform
31
Alternifenestella vagrantia Gilmour and Snyder
32
apertural node
Alternifenestella vagrantia Gilmour and
Snyder Similar to A. argumentosa Morozova and
Krutchinina
33
Polypora arbusca Gilmour and Snyder
34
Polypora arbusca Gilmour and Snyder Very
similar to P. hinganensis Romantchuk from the Far
East of Russia
35
Mackinneyella stylettia Gilmour and Snyder
36
Obverse compound stylet
37
Obverse compound stylet
Mackinneyella stylettia Gilmour and Snyder Very
similar to M. ovalfenestrata (Sakagami) and M.
sugiyamae (Sakagami) from Japan
38
Map from Stevens (1995) showing occurrences of
giant Permian fusulinids
Eastern Washington
39
Parafusulina? mclaughlini from eastern Washington
(Stevens, 1995)
40
Parafusulina? mclaughlini
41
LOCATION OF SIMILAR SPECIES TO DESCRIBED SPECIES
Species Japan China Far East Canadian Arctic Russian Platform Great Basin
Fistuliramus pacificus X X
Meekoporella inflecta X
Neoeridotrypella missionensis X X
Coeloclemis urhausenii X
Tabulipora colvillensis X X
Rhombtrypella kettlensis X X
Dyscritella iwaizakiensis X
Pamirella oculus X
Pinegopora petita X
Hayasakapora cf. erectoradiata X
Wjatkella nanea X X
Alternifenestella vagrantia X
Polypora arbusca X
Mackinneyella stylettia X
42
(No Transcript)
43
(No Transcript)