Megafossils from the Mesoproterozoic Rohtas Formation (the Vindhyan Supergroup), Katni area, central India

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

“…1.6 Ga (Rasmussen et al, 2002;Ray et al, 2002;Bengtson et al, 2009). These ages are broadly consistent with the occurrence of microfossils such as Grypania (Kumar, 1995) which occur globally in strata of similar ages (Adams et al, 2017).…”

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

“…1.6 Ga (Rasmussen et al, 2002;Ray et al, 2002;Bengtson et al, 2009). These ages are broadly consistent with the occurrence of microfossils such as Grypania (Kumar, 1995) which occur globally in strata of similar ages (Adams et al, 2017).…”

Morphologically Complex Organic-Walled Microfossils (Owm) From The Late Palaeoproterozoic - Early Mesoproterozoic Chitrakut Formation, Vindhyan Supergroup, Central India And Their Implications On The Antiquity Of Eukaryotes

“…Among the carbonaceous fossils, Grypania the oldest coiled megascopic fossil recorded from marine realm, described from 1.87 Ga old Negaunee Iron Formation, Michigan (Han and Runnegar, 1992;Schneider et al, 2002), is considered as the oldest eukaryote. Similar fossils were also recorded from the Mesoproterozoic rocks in North China, Montana and India (Walter et al, 1990;Kumar, 1995;Sharma and Shukla, 2009a,b). However, Sharma and Shukla (2009a) established that the Grypania was prokaryotic in nature.…”

Megascopic carbonaceous compression fossils from the Neoproterozoic Bhima Basin, Karnataka, South India

“…Morphologically Sinosabellidites may be similar to oscillatorian cyanobacteria, but it is larger by two orders of magnitude and without cross walls within its hollow cavity. Similar large forms have been recorded from the Mesoproterozoic Rohtas Formation of India (Tandon & Kumar 1977;Kumar 1995), where they were first considered to be annelid remains (Tandon & Kumar 1977). Later, Glaessner (1987) suggested them to be extra-large cyanobacterial sheaths similar to Oscillatoria but 20-30 times larger.…”

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

“…1.6 Ga (Rasmussen et al, 2002;Ray et al, 2002;Bengtson et al, 2009). These ages are broadly consistent with the occurrence of microfossils such as Grypania (Kumar, 1995) which occur globally in strata of similar ages (Adams et al, 2017).…”

Morphologically Complex Organic-Walled Microfossils (Owm) From The Late Palaeoproterozoic - Early Mesoproterozoic Chitrakut Formation, Vindhyan Supergroup, Central India And Their Implications On The Antiquity Of Eukaryotes

“…Among the carbonaceous fossils, Grypania the oldest coiled megascopic fossil recorded from marine realm, described from 1.87 Ga old Negaunee Iron Formation, Michigan (Han and Runnegar, 1992;Schneider et al, 2002), is considered as the oldest eukaryote. Similar fossils were also recorded from the Mesoproterozoic rocks in North China, Montana and India (Walter et al, 1990;Kumar, 1995;Sharma and Shukla, 2009a,b). However, Sharma and Shukla (2009a) established that the Grypania was prokaryotic in nature.…”

Megascopic carbonaceous compression fossils from the Neoproterozoic Bhima Basin, Karnataka, South India

“…Morphologically Sinosabellidites may be similar to oscillatorian cyanobacteria, but it is larger by two orders of magnitude and without cross walls within its hollow cavity. Similar large forms have been recorded from the Mesoproterozoic Rohtas Formation of India (Tandon & Kumar 1977;Kumar 1995), where they were first considered to be annelid remains (Tandon & Kumar 1977). Later, Glaessner (1987) suggested them to be extra-large cyanobacterial sheaths similar to Oscillatoria but 20-30 times larger.…”

Precise age of Bangiomorpha pubescens dates the origin of eukaryotic photosynthesis

“…1.6 Ga (Rasmussen et al, 2002;Ray et al, 2002;Bengtson et al, 2009). These ages are broadly consistent with the occurrence of microfossils such as Grypania (Kumar, 1995) which occur globally in strata of similar ages (Adams et al, 2017).…”

Morphologically Complex Organic-Walled Microfossils (Owm) From The Late Palaeoproterozoic - Early Mesoproterozoic Chitrakut Formation, Vindhyan Supergroup, Central India And Their Implications On The Antiquity Of Eukaryotes

“…Among the carbonaceous fossils, Grypania the oldest coiled megascopic fossil recorded from marine realm, described from 1.87 Ga old Negaunee Iron Formation, Michigan (Han and Runnegar, 1992;Schneider et al, 2002), is considered as the oldest eukaryote. Similar fossils were also recorded from the Mesoproterozoic rocks in North China, Montana and India (Walter et al, 1990;Kumar, 1995;Sharma and Shukla, 2009a,b). However, Sharma and Shukla (2009a) established that the Grypania was prokaryotic in nature.…”

Megascopic carbonaceous compression fossils from the Neoproterozoic Bhima Basin, Karnataka, South India

“…Morphologically Sinosabellidites may be similar to oscillatorian cyanobacteria, but it is larger by two orders of magnitude and without cross walls within its hollow cavity. Similar large forms have been recorded from the Mesoproterozoic Rohtas Formation of India (Tandon & Kumar 1977;Kumar 1995), where they were first considered to be annelid remains (Tandon & Kumar 1977). Later, Glaessner (1987) suggested them to be extra-large cyanobacterial sheaths similar to Oscillatoria but 20-30 times larger.…”