A new graptolite, intermediate between the Tuboidea and the Camaroidea

Authors
Mierzejewski, P
Citation
P. Mierzejewski, A new graptolite, intermediate between the Tuboidea and the Camaroidea, ACT PAL POL, 46(3), 2001, pp. 367-376
Citations number
29
Categorie Soggetti
Earth Sciences
Journal title
ACTA PALAEONTOLOGICA POLONICA
ISSN journal
05677920 → ACNP
Volume
46
Issue
3
Year of publication
2001
Pages
367 - 376
Database
ISI
SICI code
0567-7920(200108)46:3<367:ANGIBT>2.0.ZU;2-W
Abstract
A new tuboid graptolite, Camarotubus graptocamaraeformis gen. et sp.n., is described from a calcareous erratic boulder of middle Ordovician (Caradoc?) age from Poland. This encrusting form combines characters of both the tubo id and the camaroid graptolites, and is regarded as a purely morphological intermediate between them. This finding supports Kozlowski's (1949) concept of a close phylogenetic relationship between the orders Tuboidea and Camar oidea.