Да, волчара отчаянный. Все спешат скорее пожрать, знают, что скоро придёт арктодус.

Как-то странно, что они потеряли зазубрины (мегантереон), а потом вновь приобрели.

А вот старая школа - работа небезысвестного Найта 1941 г., семейство смилодонов в плейстоценовой Флориде, что ли:

Картинки хорошие, особенно выделяется плейстоценовая сцена между смилодоном и дирусами.
Но насчет последней трехмерки, Алекс - она же неправильная, сам видишь - Клыки слишком длинные и пропорции задних лап искажены. И когдти медвежьи, а не кошачьи.

Скорее как программист игрушек в стиле фэнтэзи и рисовальщик комиксов.

А где ты нашел ту классную картинку со смилодонами и дирусами?

Revs! А можно реконструкцию в 1612 сообщении подправить фотошопом? 1. убрать когти. 2. уменьшить клыки. 3. уменьшить обьем задних конечностей ???

Это точно для какой-то игрульки компьютерной сделано или фильма ужасов.  Вот у Буриана нормальное, достоверное животное изображено:

Crazy Zoologist :

На территории Венесуэлы найдены первые окаменелые останки одного из представителей вымерших саблезубых котов. Находка была сделана в ходе работ по поиску нефти к юго-востоку от Каракаса, отмечают палеонтологи.

"В Южной Америке – это наиболее важное открытие за последние 60 лет", - говорит Асканио Ринкон из Института научных исследований.

По его словам, останки шести саблезубых кошек, или Homotherium, были найдены вместе с окаменелыми останками древних пантер, волков, верблюдов, кондоров, уток и лошадей. Возраст саблезубых хищников оценивается в 1,8 миллиона лет. На все это богатство наткнулись разведчики недр из компании Petroleos de Venezuela.
Наиболее важной находкой, по словам палеонтологов, стал полный череп саблезубого кота, это животное никогда прежде в Южной Америке не находили.

"Для нас - это настоящая веха, открывающая окно в прошлое", - отмечает ученый.

Саблезубый кот, уменьшенная версия саблезубого тигра с внешностью, напоминающей гиену, как считалось, обитал только в Африке, Евразии и Северной Америке 5 – 10 миллионов лет назад.

По новым оценкам Ринкона, саблезубые кошки вымерли в Южной Америке около 500.000 лет назад.


500 не рановато ли?

Эта находка обсуждалась год назад!

А рядом изображён орк - наездник этого саблезуба.

Фавор для Алекса.......   



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Body Size of Smilodon (ключевые выдержки текста)


MATERIALS AND METHODS

A sample of 23 extant felids from the Zoological Museum in Copenhagen, representing 10 species, was measured for the purpose of this study (Table 1; Appendix A). In order not to confuse intra- and interspecific allometry, averages of each species with multiple individuals were used for statistical analysis, with the exception of the tiger, which was represented by two distinct subspecies, the Bengal subspecies (Panthera tigris tigris) and the Siberian subspecies (P. tigris altaica).



Nine specimens, represented by individual bones from the University of Florida (UF), of Smilodon gracilis were used in the study. Five specimens of S. populator from the Zoological Museum (CN) were included in the study. Of those five specimens, only one (CN52) was a partial skeleton, and the rest were individual bones from different individuals. Additionally, three specimens from Museo de La Plata (Buenos Aires, Argentina) were included in the study. Twenty-five specimens of Smilodon fatalis from the Los Angeles County Museum (Hancock Collection; LACMHC) were used in the study. Smilodon fatalis is the second commonest mammalian species to be recovered from the Rancho La Brea asphaltic deposits after dire wolves (Canis dirus).


Body masses for all specimens of the extant species had been recorded just after death, which is unusual for museum specimens, and no literature values were included. One






RESULTS

All forelimb parameters show high correlations with body mass (Table 2, Fig. 3), and only the ulna has correlation coefficients _0.95, especially the anteroposterior diameter of the diaphysis (r _0.9). However, examination of the residuals identified outliers in 12 cases and omission of an outlier species resulted in often markedly higher correlation coefficients and lower %SEE’s and %PE’s (Table 2).

The lynx (Lynx lynx) was the most frequent outlier species, and only in the dimensions of the ulna was there another outlier species, the cheetah (Acinonyx jubatus). The cheetah has especially long lower limbs for a felid (Gonyea, 1976a; Christiansen, 1998), in accordance with its locomotory specializations (Sharp, 1997; Christiansen, 2002b). The six best forelimb predictors of body mass, based on the %PE’s and %SEE’s, are shown in Figure 3, and in all but one case (anteroposterior diameter of the humeral diaphysis) the equations were derived from the restricted dataset, excluding the lynx. Most of the parameters scale nonisometrically with body mass (Table 2), and the confidence limits exclude the coefficients for isometry (mass _ length dimension3.00; mass _ area1.5). This indicates that the animals become progressively stouter with increased body size. Only humerus and ulna lengths scale with isometry (mass _ l3.00). Hindlimb parameters also showed high correlations with body size (r _ 0.95; Table 3), and again the omission of an outlier species (Lynx lynx) resulted in improved correlations in 11 cases (Table 3, Fig. 4). Femur and tibia lengths and femur least circumference scaled isometrically with body mass, but as for the forelimb variables, most other linear dimensions scaled with positive allometry. Surface areas also scaled with positive allometry, both the distal femoral condyles and tibial proximal and distal articulating facets, as could be expected when having to support a nonisometric increase in body mass (Table 3). The six best hindlimb predictors of body mass are shown in Figure 4, and as for the forelimb these were all datasets where an outlier species had been omitted.

The body size of Smilodon gracilis varied between 56–97 kg for samples where the bone averages had been found by computation of simple averages and 51–99 kg for samples where the %PE was taken into account, down-weighting the less reliable estimated masses in favor of estimates from equations with a lower %PE (Table 4; Appendix B). Weighted samples nearly unanimously resulted in higher body mass estimates. Weighted samples frequently resulted in higher standard deviations (Table 4; Appendix B).

Smilodon gracilis appears to have been comparable in size to extant leopards, pumas, and jaguars (Sunquist and Sunquist, 2002). Smilodon gracilis appears also to have been distinctly less massive in overall build than S. populator (see below), since there is not as marked a discrepancy between length and width estimates (Appendix B). It appears to have been more similar to S. fatalis (below).

The body size of Smilodon fatalis varied between 140–265 kg for simple averages and 157–281 kg for
%PE weighted samples (Table 4; Appendix B). As for S. gracilis, weighted samples nearly unanimously resulted in higher body mass estimates, indicating that a simple average fails to emphasize the proportionally heavy build of Smilodon. Weighted samples always resulted in higher standard deviations, indicating a wider spread (see also Appendix B). The estimated mass range is similar to the mass range of extant Siberian tiger males (Sunquist and Sunquist, 2002). As found by Anyone (1993), the lower limb bones (ulna, tibia) generally yielded slightly lower mass values than the upper limb bones (humerus, femur) and bone lengths resulted in markedly lower estimated masses than bone diameters (Appendix B), in accord with the proportionally stocky and heavy overall build of Smilodon; Fig. 2 (Turner and Anton, 1997). This demonstrates that body mass
should not be computed from just one or two dimensions, but rather from a variety of dimensions.

The partial skeleton LACMPMS 1-1 confirmed the above, with higher body mass values predicted from proximal (humerus, femur) than distal (tibia) dimensions, although the ulna yielded comparable values to humerus and femur in this specimen (Table 5). Overall, however, the variation in estimated body mass among the various bones, both from individual specimens and from LACMPMS 1-1, was rather moderate, indicating that Smilodon fatalis was not built markedly different from the extant large felids, where the jaguar (Panthera onca) and clouded leopard (Neofelis nebulosa) also have proportionally shorter and stockier limbs and a more robust build than tigers or lions (Gonyea, 1976a,b; Sunquist and Sunquist, 2002). The mass range of S. fatalis from the current study is substantially lower than Anyonge’s (1993) estimate of 347–442 kg (based on humeral and femoral dimensions only). In contrast, Smilodon populator was substantially larger than S. fatalis, and fell outside the size range of extant felids (Tables 4, 5). Mass averages corrected for differences in %PE’s were unanimously higher than uncorrected ones, indicating that mass values above the simple average were computed by more reliable equations with a lower %PE and that very low values were usually not as reliable as higher ones, as for S. fatalis. Body mass values based on diaphyseal dimensions always greatly exceeded the corresponding values predicted from bone lengths (Appendix B), as also found for S. gracilis and S. fatalis, but in S. populator this was even more pronounced, indicating that this huge sabertooth had a particularly massive overall build. The estimated mass range for S. populator was 205–329 kg (simple averages) and 231–358 kg (averages with correction for differences in %PE values). This is comparable to world record Siberian tigers (Wood, 1976; but see Sunquist and Sunquist, 2002, for discussion). From the partial skeleton LACMPMS 1-1 of Smilodon fatalis and CN52 of S. populator (Appendix B), it is evident that the epipodials, especially the tibia, were markedly shorter in Smilodon than in extant felids. For instance, the ulna/humerus ratios of several extant big cats (Appendix A: Panthera leo, 1.08; P. onca, 1.01; P. pardus, 1.09, P. t. tigris, 1.06; and P.t. altaica, 1.05) were unanimously higher than in the corresponding ratio in LACMPMS 1-1 (0.97) and CN52 (0.94). Among extant felids, these values are comparable to particularly stocky individuals of the clouded leopards exclusively (range: 0.97–1.04; Christiansen, unpubl.). Similarly, the tibia/femur ratio of the extant big cats ranges from 0.85–0.96 (P. leo and P. onca, 0.85; P. pardus, 0.96; P. t. tigris, 0.84; P. t. altaica, 0.86; and Neofelis nebulosa, 0.96), as also found by Gonyea (1976a,b). In S. fatalis LACMPMS 1-1, it is 0.75. In S. populator CN52, the femoral caput was missing, rendering a length value tentative, but the femur appears to have been around 400 mm, resulting in a ratio of around 0.70, far lower than in any extant felid.


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Ура

Отредактировано Grrraaahhh (26 November 2009 20:35:52)

Grrraaahhh, большое спасибо за информацию и таблици! Христиансен в статье говорит о очень больших костях популятора, Вам размер их известен? Вторую статью ждем с нетерпением

You've probably read this, Grrraaahhh?
http://www.sekj.org/PDF/anzf29/anz29-057-068.pdf

Unfortunately, I do not find the authors you mentioned in the Web, it seems likely that the articles you want are only in the hardcopies in some specialized libraries... At least in my experience.
Please don't waste your time for the Miracinonyx information - I just thought that you could have such papers already in you hand. If you need to look for themn on purpose - just forget it. Sorry for disturbing and thans again for the interesting paper about the Smilodon.

Grrraaahhh, На форуме есть тема " Литература" там можна оставить свое сообщение с нужной для Вас статьи ,или книги ,и возможно у кого то из форумчан она есть !