yes, they are very similar to *Ficopomatus* as well. However, *Ficopomatus *is
met within estuarine environments only, while Temblor Formation, where the
object was found, seems to be mostly marine. This is the reason why I
excluded genus *Ficopomatus *from most probable determinations.
Finally, the best way is that offered by Harry ten Hove - to examine
visually part of the sample, not the photo).
Respect,
Alexei
2014-09-19 21:12 GMT+04:00 Colin Hermans <hermans from rockisland.com>:
> Dear All: The Fossils look very much like the tubes of what are now
> called Ficopomatus enigmaticus that cluster on pilings and other hard
> surfaces in the turning basin in the Petaluma River, in Petaluma,
> California. The locals there called them "corals" because their clusters
> of calcarious tubes are reminiscent of coral.
>> In Vertebrate Embryology a Laboratory Manual by Richard M. Eakin,
> University of California Press 1947, 1971, pp. 44-49, "Fertilization and
> Cleavage in a Tube Worm," is a description of how these worms make
> excellent material for students to directly observe fertilization and
> cleavage, without having to resort to computers. (Wow, direct observation
> of the real world!!!)
>> These worms, then known as Mercierella enigmatica, could be ordered from
> Dahl Biological Supply (
>http://www.wysk.com/index/california/berkeley/4ynjxlq/dahl-biological-supply-inc/profile)
> or collected from the boats and floats in the brackish water at the foot of
> University Street in Berkeley and kept in seawater in the Life Sciences
> Building.
>> Students at Sonoma State University and I made similar collections from
> the Petaluma river. This species is known for its wide range of salinity
> tolerance. We were able to verify that at Sonoma State.
>> My first thought is to question the age of these fossils in this reservoir
> that like Berkeley is in the "East Bay." How "in" the East Bay is it or
> was it?
>> Best wishes, Colin Hermans
>> ===========================
>>>> On Sep 19, 2014, at 3:34 AM, "Harry Hove, ten" <harry.tenhove from naturalis.nl>
> wrote:
>> > Dear Larry,
> >
> > There might be a few more candidate names for the tube cluster as shown
> on
> > the photograph than suggested by Alexei (but he has a lot more experience
> > with fossils than I have). Hydroides is not the only genus that can be
> mass
> > forming like this, see ten Hove & van den Hurk 1993) but it is hardly
> > possible to see details on the photograph. Any chance to send me a piece
> of
> > the stuff? Alexei will be visiting me in Naturalis next month, so maybe
> we
> > could have a short look together.
> >
> > gr.
> >
> > Harry ten Hove
> >
> >
> > Op donderdag 18 september 2014 heeft Lovell, Larry <LLovell from lacsd.org> > <javascript:_e(%7B%7D,'cvml','LLovell from lacsd.org');>> het volgende
> > geschreven:
> >
> >> Hello wormers,
> >>
> >> Any thoughts on the makers of these fossils in the photos? Serpulidae
> is
> >> highly likely, but anything more specific to suggest? Scroll down for
> >> specific info on the collecting locality and timeframe. We have
> Salmacina
> >> tribranchiata colonies locally, that are much smaller in size.
> >>
> >> Cheers,
> >>
> >> Larry
> >>
> >> Larry Lovell, President
> >> Southern California Association of Marine Invertebrate Taxonomists
> >> Visit our website: www.scamit.org<http://www.scamit.org/>
> >> (310) 830-2400 X-5613 (work)
> >> (760) 803-1608 (mobile)
> >>
> >> “What’s the use in their having names,” the Gnat said, “if they won’t
> >> answer to them?”
> >>
> >> “No use to them,” said Alice: “but it’s useful to the people who name
> >> them, I suppose.”
> >>
> >>
> >> - Lewis Carroll, Through the Looking Glass
> >>
> >>
> >>
> >> From: General_Topics [mailto:
> >> general_topics-bounces from discussion.list.scamit.org] On Behalf Of
> Enright,
> >> Wendy
> >> Sent: Thursday, September 18, 2014 11:22 AM
> >> To: general_topics from discussion.list.scamit.org> >> Cc: cpowell from usgs.gov> >> Subject: [General_Topics] FW: worm tubes
> >>
> >> Hello All!
> >>
> >> I received this interesting photo today. Can anyone provide some
> >> information? Both worms and paleontology are outside of my expertise!
> >>
> >> Thanks so much!
> >> Wendy
> >>
> >> From: Powell, Charles [mailto:cpowell from usgs.gov]
> >> Sent: Thursday, September 18, 2014 11:03 AM
> >> To: Enright, Wendy; james walker
> >> Subject: worm tubes
> >>
> >> Hi Wendy,
> >>
> >> I was wondering if you or someone down there could help me. It has to
> do
> >> with worms not mollusks and the only people I know working with worms
> are
> >> there and at LACM.
> >>
> >> I was out at Calaveras Reservoir in the east SF Bay area yesterday
> looking
> >> at the fossil they've been collecting. One thing I was shown (by Jim
> >> Walker the paleontologists out there) really interests me and Jim are
> the
> >> domes of worm tubes (see attached). They run from about a quarter to
> half
> >> meter across, the tubes in the lower portion seem to run perpendicular
> to
> >> the outer layer. Also tubes in the outer layer have a rounded top.
> These
> >> appear to be transported and laying on their side compared to bedding.
> >> Have you ever seen or heard of anything like this? Its a new one on me
> and
> >> I think it needs to be written up.
> >>
> >> These worms are in middle Miocene rocks assigned to the "Temblor"
> >> Formation.
> >>
> >> Thanks for you help.
> >>
> >> Best,
> >>
> >> Chuck
> >>
> >> --
> >> Charles L. Powell, II
> >> U.S. Geological Survey, MS 975
> >> 345 Middlefield Road
> >> Menlo Park, CA 94025
> >>
> >> 1-650-329-4985
> >> https://profile.usgs.gov/cpowell/> >>
> >
> >
> > --
> >
> > T 071-5687657, M
> >
> > Darwinweg 2 - 2333 CR Leiden
> > E Harry.tenHove from naturalis.nl I , www.naturalis.nl
> > _______________________________________________
> > Annelida mailing list
> > Post: Annelida from net.bio.net> > Help/archive: http://www.bio.net/biomail/listinfo/annelida> > Resources: http://www.annelida.net>> _______________________________________________
> Annelida mailing list
> Post: Annelida from net.bio.net> Help/archive: http://www.bio.net/biomail/listinfo/annelida> Resources: http://www.annelida.net>
--
Respect,
Alexei Ippolitov*
http://www.jurassic.ru/ippolitov.eng.htm
+7 (926) 799 03 44
*Everything you wanted to know about belemnites and serpulids, but were
afraid to ask :)
