What Kind Of Lepidodendron Is It?

[RomanK]

[Terry Dactyll]

RomanK.... Id go for the 'Counterpart of Lepidodendron feistmantelii'.... but I'm sure Bruno will put us right... Im only guessing.... I havent seen that much bark to compare it to....

[RomanK]

RomanK.... Id go for the 'Counterpart of Lepidodendron feistmantelii'.... but I'm sure Bruno will put us right... Im only guessing.... I havent seen that much bark to compare it to....

Thanks Steve, I just compared with Bruno's specimen, look

[RomanK]

Ultimately I think that it is Lepidodendron aculeatum comparing with next sources:

The Big Soviet Encyclopaedia

Lepidodendron aculeatum bse.bmp

Czech website www.geology.cz/aps/dvd_stbg/gallery/f2.gif

Geocraft publication

Lepidodendron aculeatum geocraft.bmp

[docdutronc]

Ultimately I think that it is Lepidodendron aculeatum comparing with next sources:

The Big Soviet Encyclopaedia

Lepidodendron aculeatum bse.bmp

Czech website www.geology.cz/aps/dvd_stbg/gallery/f2.gif

Geocraft publication

Lepidodendron aculeatum geocraft.bmp

Hi my friends here is the holotype (original taxon )Lepidodendron acuelatum which has been described by Sternberg ,Steve, I do not find in the bibliography Lepidodenron feistmantelii, it may be a synonym, sometimes ancient authors have described the same fossil under two different names, what are your bibliographic information .....

[RomanK]

Hi my friends here is the holotype (original taxon )Lepidodendron acuelatum which has been described by Sternberg ,Steve, I do not find in the bibliography Lepidodenron feistmantelii, it may be a synonym, sometimes ancient authors have described the same fossil under two different names, what are your bibliographic information .....

Thanks, Bruno, have you heard about diaphorodendron or may be you have a specimen?

[docdutronc]

Thanks, Bruno, have you heard about diaphorodendron or may be you have a specimen?

Hi Romank

Recent work of Professor DIMICHELE (1983/1985), of DIMICHELE and BATEMAN (1992) on many petrified specimens previously assigned to the genus Lepidodendron Sternberg led the authors to create new genus DIAPHORODENDRON and SYNCHYSIDENDRON from anatomical criteria essentially in structures preserved ,while recognizing that when the material is retained in compression, the distinction between types LEPIDODENDRON and DIAPHORODENDRON SYNCHYSIDENDRON becomes difficult, DIMICHELE (1985 page 452) estimates that a sample should be reported to the genus Lepidodendron when the characters meet the following :

1/rapport height / width of leaf bases is greater than or equal to 1 (rarely less than 1).

2/leaf bases radially thick ,bearing a median keel less ( cauda ) strongly marked transverse striations .

3/presence of parichnos infrafoliars.

-Among The french carboniferous samples of the genus diaphorodendron leaf bases are always higher than broad ,lack of parychnos infrafoliar of the essential relationships between different types SYNCHYSIDENDRON and DIAPHORODENDRON are anatomical and focus on how growth occurs and when the reproductive systems begin to develop and can be highlighted on the material held in compression and often distorted.

-Several of my specimens show parichnos and thus correspond to such genus Lepidodendron, some have little relief, parichnos are absent and can be attributed to genus SYNCHYSIDENRON, but this is not a certainty, I hope I was clear in my explanation ....

[Terry Dactyll]

Bruno....' Lepidodenron feistmantelii '.... Is just one of the tpyes listed in ' Plant Fossils of the British Coal measures' by C. Cleal & B.Thomas.... Its listed as coming from Wolley Colliery nr Barnsley.... south Yorkshire.....

[RomanK]

Hi Romank

Recent work of Professor DIMICHELE (1983/1985), of DIMICHELE and BATEMAN (1992) on many petrified specimens previously assigned to the genus Lepidodendron Sternberg led the authors to create new genus DIAPHORODENDRON and SYNCHYSIDENDRON from anatomical criteria essentially in structures preserved ,while recognizing that when the material is retained in compression, the distinction between types LEPIDODENDRON and DIAPHORODENDRON SYNCHYSIDENDRON becomes difficult, DIMICHELE (1985 page 452) estimates that a sample should be reported to the genus Lepidodendron when the characters meet the following :

1/rapport height / width of leaf bases is greater than or equal to 1 (rarely less than 1).

2/leaf bases radially thick ,bearing a median keel less ( cauda ) strongly marked transverse striations .

3/presence of parichnos infrafoliars.

-Among The french carboniferous samples of the genus diaphorodendron leaf bases are always higher than broad ,lack of parychnos infrafoliar of the essential relationships between different types SYNCHYSIDENDRON and DIAPHORODENDRON are anatomical and focus on how growth occurs and when the reproductive systems begin to develop and can be highlighted on the material held in compression and often distorted.

-Several of my specimens show parichnos and thus correspond to such genus Lepidodendron, some have little relief, parichnos are absent and can be attributed to genus SYNCHYSIDENRON, but this is not a certainty, I hope I was clear in my explanation ....

Hi Bruno, thanks for the detailed exlanation, very interesting. I heard that DIAPHORODENDRON bark has one other spicific feature diamond elements lied like roof tile overlaped each other.

After your explanation I looked attentively on my specimen and it seems I can see the parichnos:

[RomanK]

Bruno....' Lepidodenron feistmantelii '.... Is just one of the tpyes listed in ' Plant Fossils of the British Coal measures' by C. Cleal & B.Thomas.... Its listed as coming from Wolley Colliery nr Barnsley.... south Yorkshire.....

Steve, could you post any image of the Lepidodenron feistmantelii?

[docdutronc]

Hi Bruno, thanks for the detailed exlanation, very interesting. I heard that DIAPHORODENDRON bark has one other spicific feature diamond elements lied like roof tile overlaped each other.

After your explanation I looked attentively on my specimen and it seems I can see the parichnos:

Yes Romans ,I agree ,they are here ,look the picture .....

bruno

[Auspex]

It is becoming clear that, with paleobotany, there are subtleties that require you to consider the state of preservation before interpreting the specimen. What a tangled web of discovery!

[Terry Dactyll]

Bruno & RomanK.....Regarding' Lepidodenron feistmantelii '...

Being from a book it is possibly subject to 'copyright laws' so I will scan the photo and email it or message it to you privately....

[JohnJ]

It is becoming clear that, with paleobotany, there are subtleties that require you to consider the state of preservation before interpreting the specimen. What a tangled web of discovery!

Although I'm not specifically fascinated with botanical fossils, it is clear that we have some extremely knowledgeable members in this field; and I can appreciate that. A tip of the hat, gentlemen.

[RomanK]

Although I'm not specifically fascinated with botanical fossils, it is clear that we have some extremely knowledgeable members in this field; and I can appreciate that. A tip of the hat, gentlemen.

Thanks, John, your compliment is mainly toward Bruno and Steve address, I'm just a beginner and try to learn more.

Roman.

[docdutronc]

Bruno & RomanK.....Regarding' Lepidodenron feistmantelii '...

Being from a book it is possibly subject to 'copyright laws' so I will scan the photo and email it or message it to you privately....

Hi Steve and Roman

I searched the literature and found eureka! it is actually a synonym Lepidodendron feistmanteli Zalessky 1904 is synonymous with Lepidodendron jaraczewski Zeiller Bureau 1913, in paleobotany is often the case, obviously the autor has taken the original name of the holotype GSM number 77179 .

-About the specimen of Romans it is a Lepidodendron obovatum ,there also are synonymous between Lepidodendron obovatum Sternberg 1886 and Lepidodendron mannabachense Presl 1838 ,In the publication of Thomas ( 1970 ), the diagnosis is clear, the leaf scars is located in the upper third of the leaf bases for Lepidodendron jaraczewski the leaf scars is centrally located and there is no parichnos..... .

-To inform the Master Zeiller dedicated the species, L. jaraczewski , in 1886 in honor mister Jaraczewski mining engineer in the "Mines de Dourges" in northern France, he thought being in the presence of an endemic species, it was a mistake in this case a wide distribution throughout the Euramerican floristic continent

best regards

bruno

[Terry Dactyll]

Although I'm not specifically fascinated with botanical fossils, it is clear that we have some extremely knowledgeable members in this field; and I can appreciate that. A tip of the hat, gentlemen.

JohnJ & RomanK....We have Bruno to thank for his dedication to his passion.... I'm a mere 'finder of fossils', which I thoroughly enjoy.... although the level of enthusiasm portrayed here, is making me learn and become more aware of the overall picture, than just finding 'nice nodules'...Its a big jigsaw, the more pieces you see and learn, the more of the picture you can imagine and appreciate....

Thanks again Bruno....

[RomanK]

Hi Steve and Roman

I searched the literature and found eureka! it is actually a synonym Lepidodendron feistmanteli Zalessky 1904 is synonymous with Lepidodendron jaraczewski Zeiller Bureau 1913, in paleobotany is often the case, obviously the autor has taken the original name of the holotype GSM number 77179 .

-About the specimen of Romans it is a Lepidodendron obovatum ,there also are synonymous between Lepidodendron obovatum Sternberg 1886 and Lepidodendron mannabachense Presl 1838 ,In the publication of Thomas ( 1970 ), the diagnosis is clear, the leaf scars is located in the upper third of the leaf bases for Lepidodendron jaraczewski the leaf scars is centrally located and there is no parichnos..... .

-To inform the Master Zeiller dedicated the species, L. jaraczewski , in 1886 in honor mister Jaraczewski mining engineer in the "Mines de Dourges" in northern France, he thought being in the presence of an endemic species, it was a mistake in this case a wide distribution throughout the Euramerican floristic continent

best regards

bruno

Bruno, Lepidodendron aculeatum or Lepidodendron obovatum??

[docdutronc]

Bruno, Lepidodendron aculeatum or Lepidodendron obovatum??

Hi Romans

In any case it is not Lepidodendron feistmanteli ,I think the morphological characteristics of your specimen are closer to L. obovatum, L. acuelatum is more elongated !

best regards

bruno

[RomanK]

Hi Romans

In any case it is not Lepidodendron feistmanteli ,I think the morphological characteristics of your specimen are closer to L. obovatum, L. acuelatum is more elongated !

best regards

bruno

Hi Bruno, agree it's not Lepidodendron feistmanteli. You mentioned Zalessky (1904), this person worked in Donbass region with Devonian specimens in 30-th last century (50 km from Donetsk).