Barbafera carnica Senowbari-Daryan, 1980: A Triassic worm-tube

Facies ◽  
1997 ◽  
Vol 36 (1) ◽  
pp. 57-67 ◽  
Author(s):  
Baba Senowbari-Daryan
Keyword(s):  
Worm Tube

Worm tube fossils from the Hollard Mound hydrocarbon-seep deposit, Middle Devonian, Morocco: Palaeozoic seep-related vestimentiferans?

2005 ◽  
Vol 227 (1-3) ◽  
pp. 242-257 ◽  
Author(s):  
J. Peckmann ◽  
C.T.S. Little ◽  
F. Gill ◽  
J. Reitner
Keyword(s):  
Middle Devonian ◽  
Hydrocarbon Seep ◽  
Worm Tube

Devonian Dentalium martini Whitfield, 1882, is not a mollusk but a worm

1999 ◽  
Vol 73 (4) ◽  
pp. 634-640 ◽  
Author(s):  
Ellis L. Yochelson ◽  
Ronald Goodison
Keyword(s):  
Wall Thickness ◽  
Late Paleozoic ◽  
Uniform Thickness ◽  
Worm Tube

Dentalium martini Whitfield, 1882, is a calcareous worm tube, not a mollusk, and is placed in synonymy of Coleolus crenatocinctum Hall, 1879. The growth of D. martini mimics logarithmic curvature in the holotype, but in other specimens shape varies from irregularly curved to straight. A prime reason for reassignment is variation of the wall thickness around the circumference in D. martini, which in late Paleozoic and Recent scaphopods of the same size is of uniform thickness.

Dentalium giganteum Phillips: a serpulid worm tube

2001 ◽  
Vol 53 (3) ◽  
pp. 253-255 ◽  
Author(s):  
C. P. Palmer
Keyword(s):  
Worm Tube

Middle Devonian Styliolina obtusa (Hall) (Incertae sedis) and Styliolina spica (Hall) (“Vermes”) from western New York, reconsidered

1986 ◽  
Vol 60 (3) ◽  
pp. 680-688 ◽  
Author(s):  
Ellis L. Yochelson
Keyword(s):  
New York ◽  
Middle Devonian ◽  
Worm Tube ◽  
Incertae Sedis

Styliolina obtusa (Hall, 1879), only known from specimens on two slabs, is placed in synonymy with S. fissurella (Hall, 1843), a ubiquitous fossil in western New York. Styliolina spica (Hall, 1888) is known only from the holotype. This individual is about three times larger than specimens of S. fissurella (Hall); it is removed from the genus. “S.” spica is based on the broken apical end of a calcareous worm tube and is similar to Coleolus. Both of these poorly known taxa were described from different intervals in the Wanakah Shale Member of the Ludlowville Formation near Buffalo, New York.

First record of a pectinariid-like (Polychaeta, Annelida) agglutinated worm tube from the Late Cretaceous of Colombia

2013 ◽  
Vol 41 ◽  
pp. 107-110 ◽  
Author(s):  
Olev Vinn ◽  
Javier Luque
Keyword(s):  
Late Cretaceous ◽  
First Record ◽  
Worm Tube

Abundance, size and habitat relation of reef fish on biogenic structures (structure-forming invertebrates) at Anacapa Island, southern California

2010 ◽  
Vol 91 (6) ◽  
pp. 1295-1305
Author(s):  
Ilana Rosental Zalmon ◽  
Merit McCrea ◽  
Milton Stevens Love
Keyword(s):  
Reef Fish ◽  
Southern California ◽  
Patch Size ◽  
Fish Population ◽  
Positive Influence ◽  
Habitat Features ◽  
Worm Tube ◽  
Biogenic Structures ◽  
Numerical Abundance ◽  
Abundance And Distribution

A biogenic structure ecosystem of extensive worm tubes of Chaetopterus sp. harbouring different fish species was investigated at Anacapa Island, southern California to determine the numerical abundance, species composition, body size, and seasonality of the ichthyofauna associated, and their relation with the worm patch size. Bimonthly, a 30-m swimming transect and a quadrat-based survey estimated the length of each fish, the type of habitat it occupied, and the worm tube patch size-class. Larger worm mats harboured higher densities of fish, mainly the dominants Rhinogobiops nicholsii and Chaenopsis alepidota, which live inside the worm tube patches. Fish population density varied between the ‘inside’ and ‘edge’ of Chaetopterus beds as smaller and younger individuals were hindered from reaching the middle of the patch by larger, older and territorial individuals. The prevalence of positive and significant correlations between the abundance of smaller individuals of R. nicholsii and specific habitat features (e.g. edge) suggests that the abundance and distribution of juveniles might be habitat-dependent besides intraspecific competition between older and younger individuals. There was a decreasing density of R. nicholsii at greater than 20 cm away from worm tubes and there were no individuals beyond 6 m away from structure. Chaenopsis alepidota was not recorded when the patch size was less than 50% tube coverage. Our results revealed that complex habitat structure had a positive influence on the abundance of juvenile and adult of C. alepidota and R. nicholsii, and suggest that these structured areas are preferentially utilized, which contributes to its patchy distribution pattern. The presence of biological structures in low-relief sedimentary habitats can have critical functional significance even for reef fish. These important habitat features may need to be identified and protected.

So-called Salterella from the Cambrian of Australia

1936 ◽  
Vol 73 (10) ◽  
pp. 433-440 ◽  
Author(s):  
L. F. Spath
Keyword(s):  
Lower Cambrian ◽  
Good Deal ◽  
Primitive Type ◽  
East Greenland ◽  
The Real ◽  
Worm Tube ◽  
Real Nature

THE Lower Cambrian genus Salterella, Billings, has lately received a good deal of attention in connection with the problem of the origin of the Cephalopoda. The genus, it may be remembered, was first described by its author as undoubtedly allied to Serpulites i.e. a worm-tube, but it was soon transferred by Billings himself to the pteropods. Barrande and Walcott also considered Salterella to be related to Tentaculites and Hyolithes. Clark (1925), who revised the genus, came to the conclusion that Salterella was a cephalopod, and not by any means a primitive type, but it did not seem to him to be ancestral to any subsequent form. Poulsen (1927) accepted this view, stating that the cephalopod characters were very conspicuous, but his later (1932) restoration of an East Greenland form, identified with S. rugosa from Labrador, is no more convincing than was Clark's restoration of S. conulata. Unfortunately, the genotype species of Salterella (S. rugosa Billings) is still incompletely known and I agree with Teichert (1935) that further investigation is needed before the real nature of Salterella can be held to be established. If the “septal necks” are still a doubtful feature and if the very existence of a “siphuncle” is open to question, as Teichert rightly says, it is clearly as premature to visualize Salterella as a possible forerunner of the holochoanites (Schuchert, in Schindewolf, 1929) as it is to connect the equally doubtful Volborthella with either holochoanites (Teichert and Kobayashi) or orthochoanites (Schindewolf, 1934).

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