Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA
Author
Ernst, Andrej
Author
Claussen, Anna Lene
Author
Seuss, Barbara
Author
Wyse Jackson, Patrick N.
text
Palaeontologia Electronica
2022
a 15
2022-05-31
25
2
1
56
http://dx.doi.org/10.26879/1174
journal article
10.26879/1174
1094-8074
A4A07D50-3DDB-4E45-A255-1ECCF45F147A
Genus
DYSCRITELLA
Girty, 1911
Type
species.
Dyscritella robusta
Girty, 1911
, by original designation. Mississippian;
Arkansas
,
USA
.
Diagnosis.
Ramose and encrusting colonies with abundant acanthostyles and exilazooecia. Autozooecia parallel to longitudinal direction of the colony in endozone; gradually bending outward in exozone. Diaphragms in autozooecia lacking or very rare; lacking in exilazooecia. Exilazooecia circular to angular in cross section and separated from the autozooecia and from each other by thick walls. Two sizes of acanthostyles may be present. Zooecial walls thin in endozone, rapidly thickening in the exozone.
Remarks.
Dyscritella
Girty, 1911
, generally lacks diaphragms, which are commonly developed in the similar genus
Dyscritellina
Morozova
in
Dunaeva and Morozova, 1967
.
Occurrence.
Devonian to Triassic; worldwide.