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4 results for “Mawsoniidae”
Figure 4 in The diet of the Early Cretaceous coelacanth †Axelrodichthys araripensis Maisey, 1986 (Actinistia: Mawsoniidae)
Figure 4. – †Axelrodichthys araripensis stomach contents (UERJ-PMB 143). A: Close-up of the inset y (Fig. 2B), (transmitted natural light) showing the various scattered fossilized bones. White asterisk pointing to the longitudinal section of a vertebra, white arrow pointing to a lower jawbone. White arrowheads pointing to the black pigmentation that surrounds the digestive tract content. B: The same section (transmitted polarized light) in A revealing different granulometries between the "digestive tract" content (wide granulations) and the surrounding soft tissue patch (thin granulations). Black asterisk and black arrow pointing respectively to the vertebra and lower jawbone. Scale bars: A, B = 200 μm).
Figure 1 in The diet of the Early Cretaceous coelacanth †Axelrodichthys araripensis Maisey, 1986 (Actinistia: Mawsoniidae)
Figure 1. – Abdominal cavity of extant and fossil coelacanths. A: Sections of a high-resolution computerized axial tomography scan of Latimeria chalumnae (adult specimen, CCC 22), showing the position of the different organs in the abdominal cavity. B: Partially crushed specimen of †Axelrodichthys araripensis (adult specimen, UERJPMB 143). Arrows point to the lung plates; Dig T, digestive tract; L, lung and lumen of the lung; Oeso, oesopha- gus. Scale bars: A = 5 mm; B = 10 mm.
Figure 2 in The diet of the Early Cretaceous coelacanth †Axelrodichthys araripensis Maisey, 1986 (Actinistia: Mawsoniidae)
Figure 2. – Calcified lung of the Cretaceous coelacanth †Axelrodichthys araripensis (UERJ-PMB 143). A-B: Two ground sections (transmitted natural light) of a partially crushed specimen. x, y, z pointing the position of the scattered fossilized bones. Black arrows pointing to bony plates of the lung and black and white asterisks to the normal gang of the fossil. (L = lumen of lung). Scale bar = 5 mm.
Figure 3 in The diet of the Early Cretaceous coelacanth †Axelrodichthys araripensis Maisey, 1986 (Actinistia: Mawsoniidae)
Figure 3. – †Axelrodichthys araripensis stomach contents (UERJ-PMB 143). A: Close-up of the boxed area in x (Fig. 2A), (transmitted natural light) showing the various scattered fossilized bones. (1: precaudal vertebra; 2: rib?; 3: neural or hemal spine: 4: teeth; 5: lepidotrichial hemisegments; 6: myorhabdos; 7: perichondral ossification). B: Close-up of the boxed area in y (Fig. 2A) (transmitted natural light) showing the digestive tract area. White arrows pointing to microcrustacean skeletons (My = myorhabdos). C: Close-up of the left area of Fig. 2A (transmitted polarized light) to emphasize the different granulometries between the "digestive tract" contents (wide granulations) and the surrounding soft tissue patch (thin granulations). White asterisk pointing to the section of the vertebra in the upper left corner. D: Section of a small crustacean in the fossil soft tissue patch. E: Section of small foraminifera in the fossil soft tissue patch. F: Close-up of the right hemal arch of the vertebra 1 (Fig. 2A). Two white arrowheads point to the enchondral ossification of the hemal arch. (Ce = vertebral centrum; My = myorhabdos). G: Hemisegments of lepidotrichia (5, Fig. 2A). H: Teeth (4, in Fig. 2A). The white arrowheads point to the black pigmentation that surround the digestive tract. Scale bars: A, B, C = 200 μm; D, E, F, G, H = 50 μm;
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