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Topic: Blastoid


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In the News (Mon 28 Dec 09)

  
  Blastoids!
Black Bart: This blastoid is a very dark gray as is the matrix it is on.
This is a nice large blastoid perched on the edge of the matrix along with other fossiliferious material.
The blastoid measures just under 1/2 inch tall on a matrix that is 3-3/4 inches long by 2 inches wide.
www.curiogrove.com /blastoids   (235 words)

  
 Blastoid References
BEAVER, H. Morphology of the blastoid Globoblastus norwoodi.
The functional morphology and stratigraphic distribution of the Mississippian blastoid genus Orophocrinus.
The ontogeny and taxonomy of the Mississippian blastoid genus Sc/zizoblastus.
www.esconi.org /Blastoid_References.htm   (295 words)

  
 DrakNet - 100% Carbon Neutral Web Hosting
Blastoid is now done compiling and is running on PHP5.
After checking on everything on blastoid, we'll be moving on to squirtle.
We'll be moving on to upgrade the other 3 servers, PHP only, this weekend as we have a patch from Fantastico should the Fantastico problem represent itself.
www.drak.net /news.html   (1362 words)

  
 Fossil Blastoids - Southeastern Fossils - Blastoid
Blastoids are an extinct marine invertabrate Class belonging to the Phylum Echinodermata.
Blastoids are restricted to paleozoic sediments and range from the Ordovician the Permian with their peak development and diversity in the Mississippian Period.
Pentremites is the most common Blastoid form, it flurished in the upper Mississippian (Chesterian) age of the eastern USA.
www.fossilcrinoid.com /blastoidd.html   (0 words)

  
 Falls of the Ohio - Education
Crinoids and blastoids are two kinds of fossils that may be observed at the fossil beds at the Falls of the Ohio.
Blastoids had fused plates which usually held together after death, although they may have been shattered by hitting rocks or crushed upon burial.
Whereas the blastoid's anus were adjacent to the mouth, most crinoids had theirs in an elevated position.
www.fallsoftheohio.org /education/crinoids-blastoids.html   (1156 words)

  
 The Blastoidea   (Site not responding. Last check: )
Although never as diverse as their contemporaries the crinoids, blastoids are common fossils, especially in many Mississippian-age rocks.
Blastoids show a very regular and tightly integrated plate arrangement, which is in part responsible for their abundance as fossils: the theca held together after tha animal died.
The five holes that you can see on the specimen at the top of the picture, surrounding the star-shaped mouth, are the anus (the largest hole of the five) and the entrances to a set of five complex folded respiratory organs known as the hydrospires.
www.ucmp.berkeley.edu /echinodermata/blastoidea.html   (344 words)

  
 Amazon.com: Blastoid   (Site not responding. Last check: )
A new spiraculate blastoid, Pyramiblastus from the Mississippian Hampton Formation of Iowa, (Contributions from the Museum of Paleontology, University of Michigan) by Donald B Macurda (Unknown Binding - 1964)
The stereomic microstructure of the blastoid endoskeleton, (Contributions from the Museum of Paleontology, University of Michigan, v.
The ontogeny and taxonomy of the Mississipian blastoid genus Schizoblastus (Contributions from the Museum of Paleontology, the University of Michigan) by Donald B Macurda (Unknown Binding - 1979)
www.amazon.com /s?ie=UTF8&keywords=Blastoid&index=blended&page=1   (420 words)

  
 POST-MORTEM TRANSPORT OF BLASTOID THECAE   (Site not responding. Last check: )
Blastoids are relatively common components of many Paleozoic marine communities.
This study demonstrates the nature of post-mortem transport of the blastoid theca on fine grained substrates.
Several different species of blastoid, each represented by a range of sizes, were examined in order to address the effect of thecal size and shape on the relative timing and mode of transport.
gsa.confex.com /gsa/2004AM/finalprogram/abstract_79731.htm   (485 words)

  
 Blastoid at AllExperts
Blastoids persisted until their extinction at the end of Permian, about 250 million years ago.
Like crinoids, blastoids were high-level, stalked suspension feeders (feeding mainly on planktonic organisms) that inhabited clear-to-silty, moderately-agitated ocean waters from shelf to basin.
Blastoids are subdivided into two subclasses: Fissiculata, which are characterized by direct entrance to the individual hydrospires by way of slits; and Spiraculata, which are characterized by indirect entrance to the hydrospires through canals by way of pores.
en.allexperts.com /e/b/bl/blastoid.htm   (537 words)

  
 ISGS Blastoids
Blastoids had stems like crinoids, but some may have been attached directly to the sea floor.
The oldest blastoids lived about 440 to 430 million years ago and their fossils are found in Silurian rocks.
In Illinois, blastoid fossils are most commonly found in Mississippian (354 to 323 million years ago) rocks exposed in western and southwestern Illinois river bluffs and stream banks, especially in Randolph County, and also in southern Illinois near the Ohio River.
www.isgs.uiuc.edu /fossils/blastoid.htm   (148 words)

  
 Timerock Fossils, Minerals & Crystals - Ancient Species - Blastoids   (Site not responding. Last check: )
Blastoids looked like small shaggy flowers with great numbers of tiny arms extending from the body.
The body was almost covered by thick v-shaped plates almost enclosing the area on top of the animal where food, collected by the arms, was taken into the mouth.
Blastoids first developed in the seas of the Ordovician Period (505 to 434 million years ago.
www.portobello.com.au /timerock/library/fossils/species_blastoids.htm   (132 words)

  
 Congenital NevusT(c7bt2)
In the deeper portion of the reticular dermis in some examples, the nevus cells are somewhat spindle shaped, and a delicate fibrous matrix is associated with the cells (early, partial maturation).
Nodular zones are common in these immature lesions; they usually are not significantly atypical; such lesions qualify as blastoid nodules of immature congenital nevi.
3 and 4 are not blastoid lesions; they are typical of the lesion that I classify as MDM of dermal type or halo nevus-like type.
www.pathology-skin-rjreed.com /congenital_nevust_c7bt2_.HTM   (972 words)

  
 Modern Pathology - Abstract of article: Sequence analysis proves clonal identity in five patients with typical and ...   (Site not responding. Last check: )
Blastoid variants, composed of lymphoblast-like (classic type) or large (pleomorphic type) cells, arise de novo or in patients with typical MCL.
Although it has been assumed that blastoid variant represents histologic transformation of typical MCL, the clonal relationship between the two tumors has rarely been assessed at the molecular level.
All typical and blastoid neoplasms were positive for CD20, cyclin D1, and monotypic surface immunoglobulin light chain, and all typical cases were positive for CD5.
www.nature.com /doifinder/10.1038/modpathol.3800716   (333 words)

  
 Crinoid - Wikipedia, the free encyclopedia
Confusingly, another early group of echinoderms were also the Eocrinoids, but that group is currently thought to be an ancestor of blastoids rather than of crinoids.
Some fossil crinoids, such as Pentacrinites, seem to have lived attached to floating driftwood and complete colonies are often found.
The fossils of other stalked filter-feeding echinoderms, such as blastoids, are also found in the rocks of the Palaeozoic era.
en.wikipedia.org /wiki/Crinoid   (681 words)

  
 A STUDY OF THE ONTOGENY OF THE MISSISSIPPIAN BLASTOID TRICOELOCRINUS AND IT'S RELATIONSHIP TO ...   (Site not responding. Last check: )
Members of the genus grow to relatively large sizes and have one of the most dramatically varied ontogenies recorded in the blastoid record.
Furthermore, the genus Tricoelocrinus appears to be derived from the blastoid genus Metablastus, through the process of heterochrony.
A growth series of at least 15 specimens of the rare blastoid Tricoelocrinus woodmani was used.
gsa.confex.com /gsa/2005NC/finalprogram/abstract_86391.htm   (436 words)

  
 Blastoid stratocladistisc--reply to Sumrall and Brochu Journal of Paleontology - Find Articles   (Site not responding. Last check: )
The point of stratocladistics is to give appropriate weight to both the morphologic and the stratigraphic evidence of phylogeny; we gain nothing by misrepresenting the essential character of the record.
In the blastoid study, we used morphologic data only from well characterized, species-level OTUs.
Ideally, ingroups should be sampled as comprehensively as possible, but with a group as longlived and diverse as blastoids, limitations in computing power required some compromise.
www.findarticles.com /p/articles/mi_qa3790/is_200301/ai_n9206492/pg_11   (359 words)

  
 USCAP 2003 Annual Meeting
Blastoid transformation of MCL may arise de novo or following a history of typical mantle cell lymphoma.
Using laser capture microdissection and gene expression profiling we have attempted to delineate genetic events in transformation of normal mantles to MCL and MCL-BV Cyclin D1 alone is insufficient to promote the development of MCL in transgenic mice and therefore other oncogenic events are implicated.
The clonal relationship between MALT, SLL, follicular lymphoma, and Hodgkin lymphoma, DLBCL, Burkitt lymphoma, blastoid mantle cell lymphoma, lymphoblastic lymphoma, and anaplastic variant of large cell lymphoma are described.
www.uscap.org /site~/92nd/companion20h4.htm   (3228 words)

  
 DrakNet Off-Network Status Page
We have disabled SVC as well as flushed the callout database, and email should be coming in again.
It crashed due to an unspecified kernal panic.
We are checking into it now and will resolve the issue asap.
status.drak.net   (818 words)

  
 IngentaConnect Blastoid and common variants of mantle cell lymphoma exhibit dist...   (Site not responding. Last check: )
IngentaConnect Blastoid and common variants of mantle cell lymphoma exhibit dist...
Blastoid and common variants of mantle cell lymphoma exhibit distinct immunophenotypic and interphase FISH features
Using additional probes of chromosomes 11, 18, 21, these signals were shown to be the result of hypotetraploidy and not of a specific amplification of the normal or the translocated CCND1 allele.
www.ingentaconnect.com /content/bsc/histo/2006/00000048/00000004/art00003   (336 words)

  
 Result Content View   (Site not responding. Last check: )
Subsequently, inhibition of the PIK3/AKT-pathway with LY294002, Wortmannin and AKT-inhibitor was performed in the four cell lines.pAKT was expressed in all 15 blastoid variants of MCL and in the 4 cell lines, with high expression in 13/15 cases and low expression in 2/15 cases.
Furthermore, pAKT expression in the blastoid variants and cell lines was accompanied by the phosphorylation of multiple downstream targets of activated AKT, including the cell cycle regulatory proteins p27, FRKHL-1, MDM-2 and the apoptosis associated protein bad.
We conclude that constitutive activation of AKT contributes to the pathogenesis of the blastoid variants of MCL.
www.abstracts2view.com /hem_ash05atlanta/view.php?nu=HEM05L1_3800   (379 words)

  
 Napoleon Field Trip
One slab was found with over a dozen blastoids embedded on the surface.
A good percentage of the blastoids found at this cut have an unfamiliar feature at the base of each ambulacra.
In addition, one blastoid was found with what looks very much like a predatory bore hole in one of the plates.
www.uky.edu /OtherOrgs/KPS/pages/napoleon.html   (799 words)

  
 Blastoidea (extinct), Kentucky Geological Survey   (Site not responding. Last check: )
Closely related to the crinoids, but without long arms on their body, the extinct blastoids were fairly abundant during the Devonian and Mississippian in Kentucky.
The hickory-nut-shaped body of the Pentremites is the most common blastoid fossil in the State.
All files associated with this page are copyrighted © 1997 – by the Kentucky Geological Survey, University of Kentucky.
www.uky.edu /KGS/fossils/blastoid.htm   (68 words)

  
 IngentaConnect Blastoid variant of mantle cell lymphoma: late progression from c...   (Site not responding. Last check: )
IngentaConnect Blastoid variant of mantle cell lymphoma: late progression from c...
Blastoid variant of mantle cell lymphoma: late progression from classical mantle cell lymphoma and quantitation of minimal residual disease
We present a case of a 41-year-old male with a 12 yr history of MCL stage I to show, that very late relapses in MCL are possible and may present as a transformation into an aggressive blastoid variant and to illustrate the value of quantitative minimal residual disease (MRD) monitoring for treatment guidance.
www.ingentaconnect.com /content/mksg/ejh/2005/00000074/00000004/art00012   (430 words)

  
 Blastoids
Description: Well-preserved example of an unusual spiraculate blastoid known as Orophocrinus stelliformis.
It is accompanied by an example of the spiraculate blastoids, a close relative of the crinoids, known as Cryptoblastus.
It was also a suitable home for blastoids; indeed, some 20% of the known fossil blastoid taxa are known from the Burlington Formation.
www.fossilmuseum.net /Fossil-Pictures/Blastoids/Crinoid13/blastoids.htm   (289 words)

  
 Mantle Cell Lymphoma
A subset of mantle cell lymphoma (MCL) tumors has blastoid morphology, and a number of morphologic variants of blastoid MCL have been described in the literature.
We conclude that 8q24 abnormalities involving the c-myc gene are uncommon secondary abnormalities that occur in a subset of mantle cell lymphomas.
Greater awareness not only of the phenotypic criteria by which lymphomas are classified but of the lymphoma markers available for evaluation of routinely processed tissue should facilitate the accurate diagnosis of diseases like MCL and minimize the risk of misdiagnosis as an indolent disorder.
www.thedoctorsdoctor.com /diseases/lymphoma_mantlecell.htm   (10604 words)

  
 Pentremites welleri
This specimen of the blastoid Pentremites has many of its simple, unbranching arms intact.
These arms collect and carry food to the mouth along large "food grooves." Blastoid arms are loosely held together by soft body tissue which decays quickly after death.
The individual plates of blastoid thecae (main body portion) are fused together, making it resistant to destruction.
www.priweb.org /collections/echin/blast/pentre.html   (67 words)

  
 Blastoid Fossil, In thumbnail, Indonesia - Great South Gems and Minerals online catalog
Blastoids were small, stemmed echinoderms, abundant and diverse in the Middle and Late Paleozoic.
Usually it is only the globular theca (head), plates, that are preserved.
The Blastoids were filter feeders with fine, hair-like feelers that waved about in the ocean waters extracting tiny particles which they
www.greatsouth.net /fossils/p-F1744.html   (69 words)

  
 Result Content View   (Site not responding. Last check: )
Blastoid MCL has a very poor prognosis, with a median survival of 16-20 months after treatment with CHOP-like chemotherapy regimens.
Rates of complete remission were lower for blastoid when compared to non-blastoid cytology (79% vs 89%, respectively) but not statistically significant (p = 0.72).
Contrary to what we had expected, the improved outcome in this group of patients with blastoid cytology suggests a potential for long term remission after intense, non-myeloablative chemotherapy.
www.abstracts2view.com /hem4806/view.php?nu=HEM06L1_1068   (245 words)

  
 A study of the type-species of the blastoid Codaster McCoy -- Joysey 90 (3): 208 -- Geological Magazine
A study of the type-species of the blastoid Codaster McCoy
"During a study of a Carboniferous blastoid fauna from Grassington, Yorkshire, over a thousand blastoids were collected, of which 45 individuals were referred to the genus Codaster.
On the geological distribution of Carboniferous blastoids in the Craven area, based on a study of their occurrence in the Yoredale Series of Grassington, Yorkshire
geolmag.geoscienceworld.org /cgi/content/abstract/90/3/208   (215 words)

  
 pentremites Pentremites godoni
Blastoids - Southeastern Fossils - Blastoid Fossils Pentremites
The blastoids have been removed from the surrounding matrix so they can be viewed from all angles.
Chisum Quarry, Gore Oklahoma Notable are the abundance of the blastoid Pentremites rusticus.
lanoxin.blog6.estateboard.com /1144270966.html   (987 words)

  
 Blastoid NK Cell Leukemia/Lymphoma with Cutaneous Involvement - Karger Publishers
Recently, they have been classified into four main types (nasal and nasal-type NK cell lymphoma, aggressive NK cell leukemia/lymphoma, and blastoid NK cell leukemia/lymphoma), based on clinical features, racial predisposition, presence of azurophilic granules, immunophenotype and association with Epstein-Barr virus (EBV) infection.
A 72-year-old Caucasian man presented with a malignant neoplasm comprised of blastoid cells without azurophilic granules in the Giemsa stain, with positivity for CD2, CD4, HLA-DR, CD45 and CD56, and negativity for CD3 (surface and cytoplasmic) and CD5.
Based on these results, a diagnosis of blastoid NK cell lymphoma was made.
content.karger.com /ProdukteDB/produkte.asp?Doi=18475   (219 words)

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